* config/powerpcspe: New port.  Files are copied from the rs6000
	port, with "rs6000" in filenames replaced by "powerpcspe".

	* config.gcc (powerpc*-*-*spe*): New.
	(powerpc-*-eabispe*): Use ${cpu_type} instead of hardcoded pathnames.
	(powerpc-*-rtems*spe*): New.
	(powerpc*-*-linux*spe*): New.
	(powerpc-wrs-vxworksspe): New.
	(powerpc*-*-*, rs6000-*-*): Use ${cpu_type}.
	(misc flags) [powerpc*-*-*, rs6000-*-*): Use ${cpu_type}.
	* config.host (powerpc*-*-*spe*): New.

From-SVN: r248429