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/utility.py b/libbe/utility.py
index 7510b16..f954422 100644
--- a/libbe/utility.py
+++ b/libbe/utility.py
@@ -27,7 +27,10 @@ import shutil
 import tempfile
 import time
 import types
-import doctest
+
+import libbe
+if libbe.TESTING == True:
+    import doctest
 
 class InvalidXML(ValueError):
     """
@@ -144,4 +147,5 @@ def iterable_full_of_strings(value, alternative=None):
             return False
     return True
 
-suite = doctest.DocTestSuite()
+if libbe.TESTING == True:
+    suite = doctest.DocTestSuite()