Fix `_resync_feedback` to flush after every write in trac-admin, so for slow syncs you actually can see progress instead of `sys.stdout` buffering the output.
Fix `_resync_feedback` to flush after every write in trac-admin, so for slow
syncs you actually can see progress instead of `sys.stdout` buffering the
output.


git-svn-id: 0d96b0c1a6983ccc08b3732614f4d6bfcf9cbb42@6916 af82e41b-90c4-0310-8c96-b1721e28e2e2

rbaumg/trac,rbaumg/trac,rbaumg/trac,rbaumg/trac