* config/ia64/fde-glibc.c, config/ia64/freebsd.h,

	* config/ia64/fde-glibc.c, config/ia64/freebsd.h,
	config/ia64/hpux.h, config/ia64/hpux_longdouble.h,
	config/ia64/ia64-c.c, config/ia64/ia64-modes.def,
	config/ia64/ia64-protos.h, config/ia64/ia64.c,
	config/ia64/ia64.h, config/ia64/ia64.md,
	config/ia64/itanium1.md, config/ia64/itanium2.md,
	config/ia64/quadlib.c, config/ia64/unwind-ia64.c,
	config/ia64/unwind-ia64.h: It's GCC, not GNU CC.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@64313 138bc75d-0d04-0410-961f-82ee72b054a4