am ea79e65f: Merge change Ib7704386 into eclair

Merge commit 'ea79e65fc656351ffeae1daa2cc40abba05d56b9' into eclair-plus-aosp

* commit 'ea79e65fc656351ffeae1daa2cc40abba05d56b9':
  BUILD SYSTEM ONLY - Add TARGET_BUILD_VARIANT to buildspec.mk.default,