* expmed.c (SLOW_UNALIGNED_ACCESS): Add mode and align parameters
	to default definition.
	(store_bit_field): Call SLOW_UNALIGNED_ACCESS with mode and alignment.
	(store_fixed_bit_field): Call macro with word_mode and alignment.
	(extract_bit_field): Call macro with relevant mode and alignment.
	* expr.c (SLOW_UNALIGNED_ACCESS): Add mode and align parameters
	to default definition.
	(move_by_pieces): Call SLOW_UNALIGNED_ACCESS with word_mode
	and alignment.
	(move_by_pieces_ninsns): Likewise.
	(clear_by_pieces): Likewise.
	(emit_push_insn): Likewise.
	(store_field): Call macro with relevant mode and alignment.
	(expand_expr): Likewise.
	(expand_expr_unaligned): Likewise.

	* rs6000.h (HANDLE_PRAGMA_PACK): Define.
	(SLOW_UNALIGNED_ACCESS): Define.
	(CASE_VECTOR_MODE): Always use 32-bit offsets.
	(ASM_FILE_END): Generate 64-bit symbol in 64-bit mode.
	(EXTRA_SECTOIN_FUNCTIONS): Indent .csect pseudo-op.
	(toc_section): Likewise and .toc pseudo-op.
	(ASM_DECLARE_FUNCTION): Likewise.  Align text more strictly in
	64-bit mode.
	(TEXT_SECTION_ASM_OP): Likewise.
	(ASM_OUTPUT_ADD_VEC_ELT, ASM_OUTPUT_ADDR_DIFF_ELT): Always use
	32-bit offsets.

	* a29k.h (SLOW_UNALIGNED_ACCESS): Add MODE and ALIGN parameters.
	* alpha.h (SLOW_UNALIGNED_ACCESS): Likewise.
	* arm/thumb.h (SLOW_UNALIGNED_ACCESS): Likewise.
	* gmicro.h (SLOW_UNALIGNED_ACCESS): Likewise.
	* fr30.h (SLOW_UNALIGNED_ACCESS): Likewise.

From-SVN: r31211