configure.in: Require GMP-4.1+ and MPFR-2.2+.

configure.in: Require GMP-4.1+ and MPFR-2.2+.

	* configure.in: Require GMP-4.1+ and MPFR-2.2+.  Don't check
	need_gmp anymore.
	* configure: Regenerate.

gcc:
	* Makefile.in (LIBS): Add $(GMPLIBS).
	* doc/install.texi: Update GMP and MPFR requirements.
	* doc/sourcebuild.texi (need_gmp): Delete.

gcc/fortran:
	* Make-lang.in (F95_LIBS): Delete.
	* f951$(exeext): Use $(LIBS) instead of $(F95_LIBS).
	* config-lang.in (need_gmp): Delete.

From-SVN: r117933