* configure.in: Update MPFR version in error message.

	* configure: Regenerate.

gcc:
	* doc/install.texi: Update recommended MPFR version.  Remove
	obsolete reference to cumulative patch.

gcc/testsuite:
	* gcc.dg/torture/builtin-sin-mpfr-1.c: Update MPFR comment.

From-SVN: r119447