OTWO-1412 Redirects logger to os.devnull

Also removes previous fix for this ticket that force upgraded
repos.

Author: amujumdar

lib/scm/adapters/bzr/pull.rb

@@ -11,28 +11,12 @@ def pull(from, &block)
 				run "mkdir -p '#{self.url}'"
 				run "rm -rf '#{self.url}'"
 				run "bzr branch '#{from.url}' '#{self.url}'"
-        clean_up_disk
 			else
 				run "cd '#{self.url}' && bzr revert && bzr pull --overwrite '#{from.url}'"
 			end
 
 			yield(1,1) if block_given? # Progress bar callback
 		end
 
-    def clean_up_disk
-      # Usually a `bzr upgrade` is unnecessary, but it's fatal to miss it when
-      # required. Because I don't know how to detect in advance whether we
-      # actually need it, we play it safe and always upgrade.
-      #
-      # Unfortunately, not only can we not know whether it is required,
-      # but the command fails and raises when the upgrade is not required.
-
-      begin
-			  run "cd '#{self.url}' && bzr upgrade"
-      rescue RuntimeError => e
-        raise unless e.message =~ /already at the most recent format/
-      end
-    end
-
 	end
 end

lib/scm/adapters/bzrlib/bzrlib_pipe_server.py

@@ -1,6 +1,6 @@
 from bzrlib.branch import Branch
 from bzrlib.revisionspec import RevisionSpec
-from cStringIO import StringIO
+import os
 import sys
 import time 
 import traceback
@@ -90,8 +90,7 @@ def command_loop():
 
 if __name__ == "__main__":
   try:
-    stream = StringIO()
-    handler = logging.StreamHandler(stream)
+    handler = logging.FileHandler(os.devnull)
     logging.getLogger('bzr').addHandler(handler)
     command_loop()
   except: