[X86][SSE] X86ISD::FSETCC nodes (cmpss/cmpsd) return a 0/-1 allbits signbits result (REAPPLIED)

Annoyingly, i686 cmpsd handling still fails to remove the unnecessary neg(and(x,1))

Reapplied rGe4aa6ad13216 with fix for intrinsic variants of the opcode which uses a vector return type