Regenerate powerpc-nofpu ulps (again).
Use separate libc.abilist for MIPS o32 soft float.

Examining MIPS test results showed an ABI test failure that I must
have missed in 2.18 testing: hard-float and soft-float o32 no longer
have the same set of symbols (because of the __mips_fpu_getcw and
__mips_fpu_setcw functions, present for hard-float only, used by
fpu_control.h for hard-float MIPS16) and so need separate ABI test
baselines (they always were ABI-incompatible - the function-calling
interface is different - but previously had the same set of symbols
and versions so didn't need separate baselines).

Tested for hard-float and soft-float o32.

	* sysdeps/unix/sysv/linux/mips/mips32/nptl/libc.abilist: Move to
	....
	* sysdeps/unix/sysv/linux/mips/mips32/fpu/nptl/libc.abilist:
	... here.
	* sysdeps/unix/sysv/linux/mips/mips32/nofpu/nptl/libc.abilist: New
	file.