Commit fast-build patch to portage_tool repository.

This patch allows us to selectively disable Portage locks in parallel_emerge.
It is not intended to be upstreamed but is left in for now until we find a way
to replace it (e.g. by integrating parallel emerge support directly into portage
itself).

Note- imported directly from patch, original metadata/sha1 lost

BUG=chromium-os:11324
TEST=build_packages --nousepkg

Review URL: http://codereview.chromium.org/6377009
Review URL: https://gerrit.chromium.org/gerrit/42996

Change-Id: I8ceb0a2ca4103162f7380dd7b8b839cfd323d248
Reviewed-on: https://chromium-review.googlesource.com/214524
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Bertrand Simonnet <bsimonnet@chromium.org>
1 file changed