Checksum for GLES messages from host to guest

Add checksum for GLES messages from host to guest. This patch contains
generated code (gl_enc.cpp, gl2_enc.cpp, renderControl_enc.cpp) and
shared code with the host (ChecksumCalculator.cpp,
ChecksumCalculator.h).

(cherry picked from commit eee828509ce3d8fac4f962a68e8d381e83223f8a)

Change-Id: Ie95128c50ad4536ecdcf5f075889313169d677d2
5 files changed