- moved flash erase_check target code to target.c

src/flash/flash.c

src/flash/flash.h

src/flash/stellaris.c

src/flash/stm32x.c

src/target/arm720t.c

src/target/arm7_9_common.c

src/target/arm7_9_common.h

src/target/arm7tdmi.c

src/target/arm920t.c

src/target/arm926ejs.c

src/target/arm966e.c

src/target/arm9tdmi.c

src/target/armv7m.c

src/target/armv7m.h

src/target/cortex_m3.c

src/target/feroceon.c

src/target/target.c

src/target/target.h

src/target/xscale.c