linux.h (MD_FALLBACK_FRAME_STATE_FOR): Partly revert 2003-01-23 patch.

2003-06-17  Franz Sirl  <Franz.Sirl-kernel@lauterbach.com>

	* config/rs6000/linux.h (MD_FALLBACK_FRAME_STATE_FOR): Partly revert
	2003-01-23 patch. Corrected to handle kernels with changed ucontext.

	* config/rs6000/sysv4.h (SUBTARGET_OVERRIDE_OPTIONS): Error on invalid
	-msdata=eabi usages.

	* gcc/config/rs6000/sysv4.h (USE_LIBC_1): Delete all uses.

From-SVN: r68087