Change to Master Branch

Change-Id: I3105225eb92bf5d5d25a02dcfde9d6825bc78fa7
change to r2.2

Change-Id: I4bf22eea21121ce5d431a23a95c96585c139db8d
Track Libcore and Remove Vendors

Change-Id: I55b019b40be5443b89291234af1c76aff8962de9
Change Toolchains to Master branch

Change-Id: I8cafc1257b0e3c822bc2036c6b36c49bcef847ec