* config.make.in: Nix completely-soft nonsense.
* configure.in: Likewise. Under --without-fp, use nofpu subdirectory
of machine directories instead of fpu subdirectory.
* sysdeps/powerpc/soft-fp/Makefile: Remove cruft added in last change.
* sysdeps/powerpc/nofpu/Makefile: Put it in this new file instead.
* sysdeps/powerpc/soft-fp/sim-full.c: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/fraiseexcpt.c: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/fegetexcept.c: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/fclrexcpt.c: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/ftestexcept.c: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/fgetexcptflg.c: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/fsetexcptflg.c: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/fedisblxcpt.c: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/feenablxcpt.c: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/fegetenv.c: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/fesetenv.c: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/fegetround.c: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/fesetround.c: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/feupdateenv.c: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/feholdexcpt.c: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/fenv_const.c: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/libm-test-ulps: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/soft-supp.h: Moved to ../nofpu.
* sysdeps/powerpc/soft-fp/Versions (libc: GLIBC_2.3.2): Moved to ...
* sysdeps/powerpc/nofpu/Versions: ... here, new file.