darwin.c, [...]: Fix comment typos.

darwin.c, [...]: Fix comment typos.

	* config/darwin.c, config/alpha/alpha.h, config/arm/arm.c,
	config/arm/arm.h, config/arm/arm.md, config/arm/bpabi.h,
	config/arm/predicates.md, config/frv/frv.c, config/frv/frv.md,
	config/h8300/h8300.md, config/i386/gmm_malloc.h,
	config/ia64/ia64.md, config/ip2k/libgcc.S,
	config/mips/mips-ps-3d.md, config/mips/mips.c,
	config/rs6000/rs6000.c, config/s390/s390.c,
	config/sh/symbian.c: Fix comment typos.

From-SVN: r87295