PowerPC floating point little-endian [13 of 15]

PowerPC floating point little-endian [13 of 15]
http://sourceware.org/ml/libc-alpha/2013-08/msg00088.html

	* sysdeps/powerpc/powerpc32/fpu/s_roundf.S: Increase alignment of
	constants to usual value for .cst8 section, and remove redundant
	high address load.
	* sysdeps/powerpc/powerpc32/power4/fpu/s_llround.S: Use float
	constant for 0x1p52.  Load little-endian words of double from
	correct stack offsets.