* config/c4x/c4x-c.c, config/c4x/c4x-modes.def,
	config/c4x/c4x-protos.h, config/c4x/c4x.c, config/c4x/c4x.h,
	config/c4x/c4x.md, config/c4x/libgcc.S, config/c4x/rtems.h:
	GCC, not GNU CC.

From-SVN: r64300