Added -fsigned-char compile flag to ensure ppc gcc treats char the same way as gcc on ix86
Added -fsigned-char compile flag to ensure ppc gcc treats char the same way as gcc on ix86

zaneb/sblim-sfcb,zaneb/sblim-sfcb,zaneb/sblim-sfcb,zaneb/sblim-sfcb,zaneb/sblim-sfcb