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, 5 insertions, 2 deletions

diff --git a/libbe/subproc.py b/libbe/subproc.py
index fe88206..8806e26 100644
--- a/libbe/subproc.py
+++ b/libbe/subproc.py
@@ -20,9 +20,11 @@ Functions for running external commands in subprocesses.
 
 from subprocess import Popen, PIPE
 import sys
-import doctest
 
+import libbe
 from encoding import get_encoding
+if libbe.TESTING == True:
+    import doctest
 
 _MSWINDOWS = sys.platform == 'win32'
 _POSIX = not _MSWINDOWS
@@ -217,4 +219,5 @@ class Pipe (object):
             stderrs = read_strings
             return (stdout, stderrs)
 
-suite = doctest.DocTestSuite()
+if libbe.TESTING == True:
+    suite = doctest.DocTestSuite()