Import L Build Tools from git_lmp-mr1-release build 1491975

http://android-build/builds/git_lmp-mr1-release-linux-sdk_phone_x86-sdk/1491975/sdk-repo-linux-build-tools-1491975.zip

source.properties has been modified to make this appear as API 22

Change-Id: Ibed67b8ac7369c4267d15301dc91040639dbfd81
32 files changed