Changed .has_key() to using in.
Fixed syntax errors.
Revert unnecessary change.
Changed .has_key() to in for slave/
Enable W601
Changed |not "action" in| to |"action" not in|
Fixed some has_key stragglers.
pep8 was being confused by properties.py's has_key property. Changed to has_propkey to avoid this confusion.
Merge branch 'change_haskey' of git://github.com/ewongbb/buildbot
Merge branch 'master' into nine

Conflicts:
	master/buildbot/process/buildstep.py
	master/buildbot/status/web/base.py
	master/buildbot/status/web/status_json.py