When run with no arguments, report warnings in the diff between the
working tree and HEAD. With arguments, report warnings in the diff
between the named commit and its parents.
Change-Id: Ie10dcdecb303edf8af51bad645cc11206a1fc26b
Prior to this patch, if there were any lint errors, this script would
exit with an error, even if those errors were not in the hunks being
tested by this script. This change makes it so that if any lint lines
are printed, an error is returned.
Change-Id: I69c8bef4367ccf25d287508f29e587b1f4426143
John Koleszar