Tweaks upgrade_from_kythe.sh script to modify Bazel BUILD files and fix the syntax of the clean command.
Tweaks upgrade_from_kythe.sh script to modify Bazel BUILD files and fix the syntax of the clean command.

Reviewers: emso

Reviewed By: emso

Differential Revision: https://phabricator-dot-shipshapecode.appspot.com/D77

google/shipshape,google/shipshape,google/shipshape,google/shipshape,google/shipshape,google/shipshape,google/shipshape