Use dateutil.tz.gettz to handle P4Poller's `server_tz`.
Merge djmitche/buildbot:bug2834 (PR #1178)
add server_tz to P4Source.compare_attrs
add a decorator for todo tests
Better error message when svn root doesn't match svnurl

Fixes #2838.
fix the reference name
'Buildbot' has only one capital 'B'

Plus some other minor cleanup.
Merge sa2ajj/buildbot:p4-relnotes-fix (PR #1183)
Trivial typo fix.
Merge pull request #1184 from vadz/patch-1

Trivial typo fix.
corect the sense of the old-slave support for slaveVersionIsOlderThan