clzsi2.c: Replace "GNU CC" with "GCC".

clzsi2.c: Replace "GNU CC" with "GCC".

	* config/h8300/clzsi2.c: Replace "GNU CC" with "GCC".
	* config/h8300/crti.asm: Likewise.
	* config/h8300/crtn.asm: Likewise.
	* config/h8300/ctzsi2.c: Likewise.
	* config/h8300/fixunssfsi.c: Likewise.
	* config/h8300/h8300-protos.h: Likewise.
	* config/h8300/h8300.c: Likewise.
	* config/h8300/h8300.h: Likewise.
	* config/h8300/h8300.md: Likewise.
	* config/h8300/paritysi2.c: Likewise.
	* config/h8300/popcountsi2.c: Likewise.
	* config/h8300/rtems.h: Likewise.

From-SVN: r62581