Emugen : A tool to generate wire protocol code

Emugen is a tool that can be used to generate code that
deals with marshaling/unmarshaling request to/from a wire-protocol.
Its input is an API defintion files and its output is C++ source
code for the client (caller) and the server (callee) sides.

See README file for more details.

This submission is resubmission of code that lived under
sdk/emulator/opengl/. However, it also includes minor updates
in ApiGen.cpp

Change-Id: I0ede7448e0a0e26fa0fbc5590d07d1f2f6566f0a
14 files changed