Do not remove the generated .hpp file from yacc.
Do not remove the generated .hpp file from yacc.

Depending on the file extension of the generated C++ file,
bison will generate a #include of a .h or .hpp. So both files
must be kept in the generated directory.

Change-Id: Id0aac7f407bdc69c7f5012c0d021761b0fceb427

xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build