config.gcc (microblaze*-linux*): Add TARGET_BIG_ENDIAN_DEFAULT

config.gcc (microblaze*-linux*): Add TARGET_BIG_ENDIAN_DEFAULT

gcc:
	* config.gcc (microblaze*-linux*): Add TARGET_BIG_ENDIAN_DEFAULT
	(microblaze*-*-elf): Likewise
	* config/microblaze/linux.h: Add -mbig-endian / -mlittle-endian to
	LINK_SPEC
	* config/microblaze/microblaze-c.c: Add builtin defines for _LITTLE_ENDIAN
	and _BIG_ENDIAN
	* config/microblaze/microblaze.h: Add TARGET_ENDIAN_DEFAULT and add to
	TARGET_DEFAULT flags.
	Expand ASM_SPEC and LINK_SPEC.
	Update BYTES_BIG_ENDIAN and WORDS_BIG_ENDIAN
	* config/microblaze/microblaze.md: Update extendsidi2 and movdi_internal
	instructions to use low-order / high-order reg print_operands
	* config/microblaze/microblaze.opt: Add mbig-endian and mlittle-endian
	options and inversemask / mask of LITTLE_ENDIAN
	* config/microblaze/t-microblaze: Expand multilib options to include mlittle-
	endian (le) and update exceptions patterns
gcc/testsuite:
	* 20101011-1.c: Add __MICROBLAZE__ exception to set DO_TEST 0

From-SVN: r195893