configure.ac (gcc_cv_ld_mips_personality_relaxation): New feature check.

configure.ac (gcc_cv_ld_mips_personality_relaxation): New feature check.

gcc/
	* configure.ac (gcc_cv_ld_mips_personality_relaxation): New
	feature check.
	(HAVE_LD_PERSONALITY_RELAXATION): New macro definition.
	* configure, config.in: Regenerate.
	* dwarf2asm.c (eh_data_format_name): Handle DW_EH_PE_indirect |
	DW_EH_PE_absptr.
	* config/mips/mips.h (TARGET_WRITABLE_EH_FRAME): New macro.
	(ASM_PREFERRED_EH_DATA_FORMAT): Define.  Use MIPS_EH_INDIRECT
	for global data if the output could be used in a shared library.
	* config/mips/mips.c (mips_override_options): Set flag_dwarf2_cfi_asm
	to 0 if TARGET_WRITABLE_EH_FRAME.

From-SVN: r151896