PowerPC: fix fabsd32
libdfp: Arranje tests/gen-libdfp-tests.py includes
libdfp: Sort ULPs entries
libdfp: Fix ULP calculation
libdfp: Add dfpu in front of fpu in sysdeps selection
libdfp: Fix powerpc/dfpu ULPs
libdfp: Fix powerpc/fpu ULPs
libdfp: Add copysign testcase