Summary: Send skipped lint warnings to Differential. This also fixes a nasty
bug with lint excluding too many warnings based on line changes.
Test Plan: meta
Reviewers:
CC:
Differential Revision: 200387
Summary: These flags let you force the behavior of 'arc lint' instead of
prompting. Also made the amend behavior default to false since I've screwed
this up about 300 times in the mere hours I've been using git as a primary VCS.
Test Plan: ran arc lint with these flags
Reviewers:
CC:
