Added libbe.TESTING (defaults to False).

This flag allows us to skip unittest and testsuite declaration if we
woln't need them.  It speeds up simple be calls a suprising amount.
With Testing=True (the old behavior):
  wking@thor:be.wtk$ time ./be > /dev/null

  real    0m0.393s
  user    0m0.340s
  sys     0m0.048s
With TESTING=False (the new behavior):
  be.wtk$ time ./be > /dev/null

  real    0m0.216s
  user    0m0.152s
  sys     0m0.064s

This adjustment was inspired by Jakub Wilk's Debian bug:
  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=559295

1 files changed, 6 insertions, 2 deletions

diff --git a/libbe/mapfile.py b/libbe/mapfile.py
index 062606b..8e1e279 100644
--- a/libbe/mapfile.py
+++ b/libbe/mapfile.py
@@ -25,7 +25,10 @@ independent/conflicting changes.
 import errno
 import os.path
 import yaml
-import doctest
+
+import libbe
+if libbe.TESTING == True:
+    import doctest
 
 
 class IllegalKey(Exception):
@@ -119,4 +122,5 @@ def map_load(vcs, path, allow_no_vcs=False):
                                      binary=True)
     return parse(contents)
 
-suite = doctest.DocTestSuite()
+if libbe.TESTING == True:
+    suite = doctest.DocTestSuite()