2011-11-05  Ralf Corsépius  <ralf.corsepius@rtems.org>

	* config/rs6000/t-rtems: Add -mcpu=8540/-mfloat-gprs=double multilib.
	Remove -mcpu=601 multilib.
	Remove -Dmpc8260 multilib.
	* config/rs6000/rtems.h: Allow --float-gprs=... to override grps
	on E500 targets.

From-SVN: r181005