* tree-dump.c (dump_enable_all): Remove prototype; do not accept
	letter argument.
	(dump_files): Update.
	(enable_rtl_dump_file): Do not accept letter argument.
	* tree-pass.h (dump_file_info): Remove letter argument.
	* toplev.c (decode_d_option): Update -da handling.
	* toplev.h (enable_rtl_dump_file): Update prototype.
	* passes.c (register_one_dump_file): Do not accept IPA argument; work
	it out based on pass type.
	(register_dump_files_1): Likewise.
	(init_optimization_passes): Update register_one_dump_file calls.
	(execute_one_pass): Sanity check that IPA passes are called at IPA level
	and RTL passes at RTL level.
	(execute_pass_list): IPA pass can not be after or subpass of
	GIMPLE/RTL pass.
	(execute_ipa_pass_list): Handle IPA subpasses of IPA subpasses and
	disallov RTL subpasses of IPA subpasses.

From-SVN: r133930