Add *.ebuild to the list of files git-gs will search.
Add *.ebuild to the list of files git-gs will search.

git-gs wasn't finding matches in the chromiumos-overlays
repo as most of the files there are .ebuild.  This fixes that.

BUG=None
TEST='git gs KEYWORDS' now returns matches

Review URL: http://codereview.chromium.org/9861001

git-svn-id: bd64dd6fa6f3f0ed0c0666d1018379882b742947@130397 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

svn2github/chromium-depot-tools,svn2github/chromium-depot-tools,svn2github/chromium-depot-tools