Ignoring statuses from the try branch.

[bheesham]

I'll submit a PR when I get more work done. This is more to keep @larsbergstrom updated, and for anyone to help out.

Right now I've found something that works to work as a filter for reporting statuses. (This all goes in master.cfg for Buildbot.)

def conditional_status(branch=None):
    def bn(branch=None):
        return branch if branch else "master"
    return bn(branch) != "try"

old_buildFinished = GitHubStatus.buildFinished
old_buildStarted = GitHubStatus.buildStarted

def new_buildFinished(self, builderName, build, results):
    source_stamp = build.getSourceStamps()[0]
    builder = build.getBuilder()

    if conditional_status(source_stamp.branch):
        old_buildFinished(self, builderName, build, results)

def new_buildStarted(self, builderName, build):
    source_stamp = build.getSourceStamps()[0]
    builder = build.getBuilder()

    if conditional_status(source_stamp.branch):
        old_buildStarted(self, builderName, build)

GitHubStatus.buildFinished = new_buildFinished
GitHubStatus.buildStarted = new_buildStarted

It's not pretty, but it works. I'm going to try to make this look a little prettier so that it can be used in the config file without making anyone feel gross.

Any improvement on this would be great.