PowerPC: fix wrong s_ceil-ppc32 definitions
PowerPC: llround typo
PowerPC: llroundf cleanup
PowerPC: fix s_round Makefile indentation
PowerPC: lround/lroundf multilib for PowerPC32
PowerPC: lrint/lrintf multilib for PowerPC32
PowerPC: finite/finitef multilib for PowerPC32
PowerPC: isinf/isinff multilib for PowerPC32
PowerPC: logb/logbf/logbl multilib for PowerPC32