There are certain scripts (such as the ramdisk init script) that
need to ignore linting rules for one reason or another. This adds
support for exclusions via a comment in the file like:
"# dib-lint: disable=executable sete"
There should be no ", but I need those to prevent git from treating
that as a comment. This syntax is similar to the pylint exclusion
mechanism.
Exclusion support is added to the executable check, but not
the alphabetical ordering one because I can't imagine a reason we
would need to disable that, and I don't know that comments are
supported in those files anyway.
Change-Id: I9ecfb47269841dc75a005855455ac26ad2cbc642