Remove MaskExists property from config/*/*.opt files

Remove MaskExists property from config/*/*.opt files

2012-03-27  H.J. Lu  <hongjiu.lu@intel.com>

	* config/arm/arm.opt (mapcs): Remove MaskExists.
	* config/cris/linux.opt (mno-gotplt): Likewise.
	* config/i386/i386.opt (mhard-float): Likewise.
	(msse4): Likewise.
	(mno-sse4): Likewise.
	* config/m68k/m68k.opt (mhard-float): Likewise.
	* config/mep/mep.op (mcop32): Likewise.
	* config/pa/pa-hpux.opt (msio): Likewise.
	* config/pa/pa64-hpux.opt (mgnu-ld): Likewise.
	* config/picochip/picochip.opt (mlittle): Likewise.
	* config/sh/sh.opt (mrenesas): Likewise.
	* config/sparc/long-double-switch.opt (mlong-double-128): Likewise.
	* config/sparc/sparc.opt (mhard-float): Likewise.
	* config/v850/v850.opt (mv850es): Likewise.
	* config/vax/vax.opt (mg-float): Likewise.

From-SVN: r185893