configure.ac (libgcc_cv_mips_hard_float): New.

configure.ac (libgcc_cv_mips_hard_float): New.

libgcc/
	* configure.ac (libgcc_cv_mips_hard_float): New.
	* configure: Regenerate.
	* config.host (mips*-*-*): Use t-hardfp-sfdf rather than
	t-softfp-sfdf for hard-float targets.
	* config/mips/t-mips (LIB2_SIDITI_CONV_FUNCS): Reinstate.
	(softfp_float_modes, softfp_int_modes, softfp_extensions)
	(softfp_truncations, softfp_exclude_libgcc2): New.
	* config/t-hardfp: New file.
	* config/t-hardfp-sfdf: Likewise.
	* config/hardfp.c: Likewise.

From-SVN: r207593