Fix up some bugs with the 64-bit FPSCR patch including erroneous test-case passes.

Fix up some bugs with the 64-bit FPSCR patch including erroneous test-case passes.

commit b7219e53bcd54d874f85c67469f4c1dd4f2ad5d2
Author: Ulrich Drepper <drepper@redhat.com>
Date:   Fri Jan 30 20:30:46 2009 +0000

2009-01-11  Ryan S. Arnold  <rsa@us.ibm.com>

        [BZ #9726]
        * sysdeps/powerpc/fpu/tst-setcontext-fpscr.c (_SET_DI_FPSCR,
        _SET_SI_FPSCR): Clobber fp0 to prevent erroneous test-case passes.

2009-01-08  Ryan S. Arnold  <rsa@us.ibm.com>

        [BZ #9726]
        * sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext-common.S
        (__CONTEXT_FUNC_NAME): Fix mtfsf to use fp31 instead of fp0.
        * sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S
        (__CONTEXT_FUNC_NAME): Fix mtfsf to use fp31 instead of fp0.