We use *.inc files extensively, especially in the api-ref, but these
files are not covered by default with our doc8 validation.
This adds support for those files and fixes a few issues that were
identified after enabling coverage.
Change-Id: I807823f3cb44274c3940db55e901d434304a09f5
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>
b6f9932f9c