tm.texi.in (US_SOFTWARE_GOFAST): Don't document.

	* doc/tm.texi.in (US_SOFTWARE_GOFAST): Don't document.
	* doc/tm.texi: Regenerate.
	* system.h (US_SOFTWARE_GOFAST): Poison.
	* config.gcc (enable_gofast): Don't handle.
	* config/gofast.h: Remove.
	* config/mips/t-gofast: Remove.
	* config/fp-bit.c (US_SOFTWARE_GOFAST): Don't handle.
	* config/fp-bit.h (US_SOFTWARE_GOFAST): Don't handle.
	* config/mips/elforion.h: Don't mention GOFAST in comment.
	* config/mips/mips.c: Don't include gofast.h.
	(mips_init_libfuncs): Don't call gofast_maybe_init_libfuncs.
	* config/mips/t-sr71k (dp-bit.c, fp-bit.c): Don't define
	US_SOFTWARE_GOFAST.
	* config/sparc/sparc.c: Don't include gofast.h.
	(sparc_init_libfuncs): Don't call gofast_maybe_init_libfuncs.
	* config/spu/t-spu-elf (dp-bit.c, fp-bit.c): Don't undefine
	US_SOFTWARE_GOFAST.

From-SVN: r167880