Removing "$Id$" lines

[Bradley Giesbrecht]

> On Oct 31, 2016, at 6:02 PM, Rainer Müller <raimue at macports.org> wrote:
> 
> On 2016-11-01 01:03, Ryan Schmidt wrote:
>> On Oct 31, 2016, at 17:17, Dan Ports <dports at macports.org> wrote:
>>> 
>>> Any reason not to just bulk-remove them all at once?
>> 
>> That would probably tie up the buildbot for weeks or months. We could
>> cancel those builds, but even the act of scheduling 20,000 builds per
>> builder is much more than we've ever attempted before and I think it
>> would not be happy about it. At the very least, I would want to wait
>> until I've switched the buildbot from SQLite to PostgreSQL.
> 
> Can we maybe decide on special commands in commit messages that cause
> the buildbot to completely ignore the commit? Such things should not
> limit us to what we can commit or not.
> 
> Perhaps a footer line (similar to Signed-off-by) at the end, such as:
> 
> buildbot: ignore

Would it work as well to have the buildbots ignore commits with unchanged epoch_version_revision.

—
Brad