Update the android cmake toolchain to latest.

To properly support 64bit architectures and clang we need the latest version.
Merge pull request #1613 from Sonicadvance1/update_android_cmake

Update the android cmake toolchain to latest.
VideoCommon: rewrite DataReader
VideoCommon: fifo cleanups
VideoCommon: cleanup OpcodeDecoder
VertexLoader: Move the old Datareader function into VertexLoader
VideoCommon: clean up VertexLoader
UnitTests: fix VertexLoaderTest