TIMOB-16154: Skip gzip if content is empty
TIMOB-16187: Don't merge attributes for module android manifest nodes.
Merge pull request #5214 from ayeung/timob-16154

TIMOB-16154: Skip gzip if content is empty
Merge pull request #5216 from ayeung/timob-16187

TIMOB-16187: Don't merge attributes for module android manifest nodes.