Extend EC2LatentBuildSlave to support spot instances.
 Made small stylistic changes
add event with change universal handler
add event handle properties
Fix stupid bug
Fix stupid bug V2
Fix. List argument, bad way
Sync upstream
Returned to old string formatting
microfix: string format
Add new unit tests
microfix: assertEqual >> failUnlessEqual
Update cfg-changesources.rst
Update cfg-changesources.rst

fix typo
Update cfg-changesources.rst

ssh passphrase
this can be a problem
Add new unit test. Testing custom handler.
Merge branch 'master' of github.com:hgenru/buildbot
added the new twisted.cred syntax for change_hook_auth in the documentation of several change hooks
Extend EC2LatentBuildSlave to support spot instances.
Enable mounting volumes after starting an instance.