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.

2 files changed, 65 insertions, 0 deletions

diff --git a/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/529c290e-b1cf-4800-be7e-68f1ecb9565c/comments/49e0425b-3332-4d0e-b371-300eccd55370/body b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/529c290e-b1cf-4800-be7e-68f1ecb9565c/comments/49e0425b-3332-4d0e-b371-300eccd55370/body
new file mode 100644
index 0000000..4ebb4f2
--- /dev/null
+++ b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/529c290e-b1cf-4800-be7e-68f1ecb9565c/comments/49e0425b-3332-4d0e-b371-300eccd55370/body
@@ -0,0 +1,51 @@
+"W. Trevor King" <wking@drexel.edu> writes:
+
+> ** NEWS file
+
+Speaking as the package maintainer, I would like a ‘ChangeLog’ file
+separate from a ‘NEWS’ file.
+
+The ‘NEWS’ file would continue to be hand-edited, and would be a
+high-level view of user-visible changes in the project each version.
+Users could reasonably expect to be interested in this file when
+installing a new version. It would also make sense to retire old news
+From this file once it becomes sufficiently old, to keep it relevant to
+users to read.
+
+
+The ‘ChangeLog’ would be an automatically-generated changelog of
+low-level changes, not for general human consumption but for letting
+recipients have a fighting chance at knowing the historical context of a
+particular change without access to the VCS. It would probably be best
+done as Trevor says:
+
+> Depending on our level of masochism, either something starting out
+> along the lines of [2]
+>   bzr log --gnu-changelog -n1 -r 200..
+
+That makes it necessary to add the changelog file to the tarball, since
+it won't be a file tracked by VCS and therefore won't be exported. Not a
+problem::
+
+    $ release_version="1.0.0"
+    $ release_name="be-$release_version"
+    $ tarball_file=../$release_name.tar.gz
+    $ work_dir=$(mktemp -t -d)
+    $ export_dir=$work_dir/$release_name
+    $ changelog_file=$export_dir/ChangeLog
+
+    $ bzr export $export_dir
+    $ bzr log --gnu-changelog -n1 -r ..tag:"$release_version" > $changelog_file
+    $ tar -czf $tarball_file $export_dir
+    $ rm -r $work_dir/
+
+    $ ls $tarball_file
+    ../be-1.0.0.tar.gz
+    $ tar -tzf $tarball_file | grep ChangeLog
+    be-1.0.0/ChangeLog
+
+-- 
+ \        “I bought a dog the other day. I named him Stay. It's fun to |
+  `\     call him. ‘Come here, Stay! Come here, Stay!’ He went insane. |
+_o__)         Now he just ignores me and keeps typing.” —Steven Wright |
+Ben Finney
diff --git a/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/529c290e-b1cf-4800-be7e-68f1ecb9565c/comments/49e0425b-3332-4d0e-b371-300eccd55370/values b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/529c290e-b1cf-4800-be7e-68f1ecb9565c/comments/49e0425b-3332-4d0e-b371-300eccd55370/values
new file mode 100644
index 0000000..b45a747
--- /dev/null
+++ b/.be/bea86499-824e-4e77-b085-2d581fa9ccab/bugs/529c290e-b1cf-4800-be7e-68f1ecb9565c/comments/49e0425b-3332-4d0e-b371-300eccd55370/values
@@ -0,0 +1,14 @@
+Alt-id: <873a4cmjw5.fsf@benfinney.id.au>
+
+
+Author: Ben Finney <bignose+hates-spam@benfinney.id.au>
+
+
+Content-type: text/plain
+
+
+Date: Wed, 18 Nov 2009 22:23:06 +0000
+
+
+In-reply-to: a4720227-43cf-49aa-8f9f-f49f46e3e809
+