Merged be.restructure, major internal reorganization.

Added a bunch of classes to make the commands, user interfaces, and
storage backends more abstract and distinct.  This should make it much
easier to extend and maintain BE.

Features:
 * Directory restructured:
   becommands/ -> libbe/commands
   submods sorted by functionality.
 * Lots of new classes:
   Option, Argument, Command
   InputOutput, StorageCallbacks, UserInterface
   Storage
 * Consolidated ID handling in libbe.util.id
 * Transitioned VCS backends for Python-based VCSs from subprocess
   calss to internal python calls.

Plus the user-visible changes:
 * New bugdir/bug/comment ID format replaces old bug:comment format.
 * Deprecated support for `be diff` on Arch and Darcs <= 2.3.1.  A new
   backend abstraction (Storage) makes the former implementation
   ungainly.
 * Improved command completion.
 * Removed commands close, open, email_bugs, 
 * Flipped some arguments
   `be assign BUG-ID [ASSIGNEE]` -> `be status ASSIGNED BUG-ID ...`
   `be severity BUG-ID SEVERITY` -> `be severity SEVERITY BUG-ID ...`
   `be status BUG-ID STATUS` -> `be status STATUS BUG-ID ...`

In the merge:
  * Added 'commit' to list of pagerless commands.
  * Updated doc/README.dev

See
#bea86499-824e-4e77-b085-2d581fa9ccab/1100c966-9671-4bc6-8b68-6d408a910da1#
for a discussion of why the changes were made and some of the
difficulties en-route.

12 files changed, 111 insertions, 0 deletions

diff --git a/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/287d3cc1-1cd0-449a-b280-87c529e33951/body b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/287d3cc1-1cd0-449a-b280-87c529e33951/body
new file mode 100644
index 0000000..53456f6
--- /dev/null
+++ b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/287d3cc1-1cd0-449a-b280-87c529e33951/body
@@ -0,0 +1,10 @@
+Hmm, perhaps my thinking has been too revision-centric.  I'm not
+really sure what other level of granularity is appropriate though.
+Both notifications and commits should be generated on a "per-session"
+level, so maybe I'll just ignore Arch and Mercurial (for whom revising
+history is difficult, so per-session commits can be more work) for the
+time being ;).
+
+In that case, _every_ commit will be a
+  notify-since <revision-id>
+sort of change, so I'll just use libbe.diff :).
diff --git a/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/287d3cc1-1cd0-449a-b280-87c529e33951/values b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/287d3cc1-1cd0-449a-b280-87c529e33951/values
new file mode 100644
index 0000000..797a274
--- /dev/null
+++ b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/287d3cc1-1cd0-449a-b280-87c529e33951/values
@@ -0,0 +1,8 @@
+Author: W. Trevor King <wking@drexel.edu>
+
+
+Content-type: text/plain
+
+
+Date: Wed, 22 Jul 2009 19:07:28 +0000
+
diff --git a/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/303986f2-0b17-4589-bf76-ed1461699c3e/body b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/303986f2-0b17-4589-bf76-ed1461699c3e/body
new file mode 100644
index 0000000..df90918
--- /dev/null
+++ b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/303986f2-0b17-4589-bf76-ed1461699c3e/body
@@ -0,0 +1,16 @@
+Perhaps something like
+  be-handle-mail --notify-since <revision-id>
+to tell subscribers about changes since the specified revision.
+
+This would duplicate mail to P in our first example above, but that's
+not too annoying, and P might _want_ to know what R had merged from Q.
+
+On the other hand it would be annoying if 10 other repos merged Q and
+ran the notification.
+
+We could make the subscription something like
+  subscribe BUG-ID HOST-LIST
+e.g.
+  subscribe 1234 bugseverywhere.org,fancy_branch.com
+  subscribe abcd *
+To allow users to whitelist hosts they want updates from.
diff --git a/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/303986f2-0b17-4589-bf76-ed1461699c3e/values b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/303986f2-0b17-4589-bf76-ed1461699c3e/values
new file mode 100644
index 0000000..e19bf0b
--- /dev/null
+++ b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/303986f2-0b17-4589-bf76-ed1461699c3e/values
@@ -0,0 +1,11 @@
+Author: W. Trevor King <wking@drexel.edu>
+
+
+Content-type: text/plain
+
+
+Date: Tue, 21 Jul 2009 19:52:25 +0000
+
+
+In-reply-to: 950ac308-f3e1-4956-885a-e79ce3025fd5
+
diff --git a/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/478443b3-dd69-4719-b79a-b1279f75b8e4/body b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/478443b3-dd69-4719-b79a-b1279f75b8e4/body
new file mode 100644
index 0000000..8842587
--- /dev/null
+++ b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/478443b3-dd69-4719-b79a-b1279f75b8e4/body
@@ -0,0 +1,5 @@
+"all" and "new" might be valid shortnames?
+
+Nope, UUID string representations are restricted to hex (0-9a-f) and
+"-" as per RFC 4122 section 3.
+
diff --git a/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/478443b3-dd69-4719-b79a-b1279f75b8e4/values b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/478443b3-dd69-4719-b79a-b1279f75b8e4/values
new file mode 100644
index 0000000..74d7d97
--- /dev/null
+++ b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/478443b3-dd69-4719-b79a-b1279f75b8e4/values
@@ -0,0 +1,11 @@
+Author: W. Trevor King <wking@drexel.edu>
+
+
+Content-type: text/plain
+
+
+Date: Tue, 21 Jul 2009 19:53:02 +0000
+
+
+In-reply-to: 85a2d1ac-200a-4ae7-841f-9f4e87795dbf
+
diff --git a/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/85a2d1ac-200a-4ae7-841f-9f4e87795dbf/body b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/85a2d1ac-200a-4ae7-841f-9f4e87795dbf/body
new file mode 100644
index 0000000..99d9cc3
--- /dev/null
+++ b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/85a2d1ac-200a-4ae7-841f-9f4e87795dbf/body
@@ -0,0 +1,8 @@
+Obviously via the control interface:
+  subscribe #BUG-ID
+  subscribe new
+  subscribe all
+  unsubscribe #BUG-ID
+  ...
+Implemented via .extra_strings, although we'll need
+BugDir.extra_strings for the repo-wide new/all.
diff --git a/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/85a2d1ac-200a-4ae7-841f-9f4e87795dbf/values b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/85a2d1ac-200a-4ae7-841f-9f4e87795dbf/values
new file mode 100644
index 0000000..ae4672b
--- /dev/null
+++ b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/85a2d1ac-200a-4ae7-841f-9f4e87795dbf/values
@@ -0,0 +1,8 @@
+Author: W. Trevor King <wking@drexel.edu>
+
+
+Content-type: text/plain
+
+
+Date: Tue, 21 Jul 2009 19:34:20 +0000
+
diff --git a/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/950ac308-f3e1-4956-885a-e79ce3025fd5/body b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/950ac308-f3e1-4956-885a-e79ce3025fd5/body
new file mode 100644
index 0000000..890a4b6
--- /dev/null
+++ b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/950ac308-f3e1-4956-885a-e79ce3025fd5/body
@@ -0,0 +1,10 @@
+This creates an interesting situation:
+  Person P subscribes to bug B in repo R.
+  Repo S merges repo R.
+  Person Q comments on B in S.
+  S notifies P :).
+which is nice.  However
+  Person P subscribes to bug B in repo R.
+  Person Q comments on B in repo S.
+  R merges S.
+  P never notified about Q's comment.
diff --git a/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/950ac308-f3e1-4956-885a-e79ce3025fd5/values b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/950ac308-f3e1-4956-885a-e79ce3025fd5/values
new file mode 100644
index 0000000..d9fcf73
--- /dev/null
+++ b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/950ac308-f3e1-4956-885a-e79ce3025fd5/values
@@ -0,0 +1,11 @@
+Author: W. Trevor King <wking@drexel.edu>
+
+
+Content-type: text/plain
+
+
+Date: Tue, 21 Jul 2009 19:34:32 +0000
+
+
+In-reply-to: 85a2d1ac-200a-4ae7-841f-9f4e87795dbf
+
diff --git a/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/f72f8640-2e50-471e-aebe-0ddb8cdd5a2a/body b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/f72f8640-2e50-471e-aebe-0ddb8cdd5a2a/body
new file mode 100644
index 0000000..3c95f19
--- /dev/null
+++ b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/f72f8640-2e50-471e-aebe-0ddb8cdd5a2a/body
@@ -0,0 +1,2 @@
+The intereface changed a bit as I implemented it.  See "be help
+subscribe" for details.
diff --git a/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/f72f8640-2e50-471e-aebe-0ddb8cdd5a2a/values b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/f72f8640-2e50-471e-aebe-0ddb8cdd5a2a/values
new file mode 100644
index 0000000..f42f8ad
--- /dev/null
+++ b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/3e331b72-51fd-4408-bc0d-b6c5ac3b9f3e/comments/f72f8640-2e50-471e-aebe-0ddb8cdd5a2a/values
@@ -0,0 +1,11 @@
+Author: W. Trevor King <wking@drexel.edu>
+
+
+Content-type: text/plain
+
+
+Date: Wed, 22 Jul 2009 18:54:06 +0000
+
+
+In-reply-to: 85a2d1ac-200a-4ae7-841f-9f4e87795dbf
+