* config/i386/uwin.h: Remove SUBTARGET_PROLOGUE.

	* config/i386/i386.c (ix86_expand_prologue): Do not use
	SUBTARGET_PROLOGUE.

	* system.h: Poision SUBTARGET_PROLOGUE.

	* config/arm/arm-protos.h: Remove unused rdate_section prototype.

	* output.h: Remove TDESC_SECTION_ASM_OP and RDATA_SECTION_ASM_OP
	dependend code.

	* system.h: Poison TDESC_SECTION_ASM_OP and RDATA_SECTION_ASM_OP.

	* system.h: Poison INSN_CACHE_DEPTH, INSN_CACHE_SIZE and
	INSN_CACHE_LINE_WIDTH.

	* libgcc2.c (INSN_CACHE_PLANE_SIZE): Removed.
	(__clear_cache): Remove code dependend on INSN_CACHE_DEPTH,
	INSN_CACHE_SIZE and INSN_CACHE_LINE_WIDTH.

	* doc/tm.texi (Trampolines): Remove INSN_CACHE_DEPTH,
	INSN_CACHE_SIZE and INSN_CACHE_LINE_WIDTH.

	* dbxout.c (dbxout_type): Remove usage of DBX_OUTPUT_ENUM.
	(dbxout_symbol): Remove usage of DBX_OUTPUT_CONSTANT_SYMBOL.
	(dbxout_block): Remove usage of DBX_OUTPUT_CATCH.
	(dbxout_block): Remove usage of DBX_LBRAC_FIRST.
	(dbxout_source_file): Remove usage of DBX_OUTPUT_SOURCE_FILENAME.
	(dbxout_init): Remove test for DBX_WORKING_DIRECTORY.

	* doc/tm.texi (DBX Options): Do not document DBX_LBRAC_FIRST,
	DBX_OUTPUT_SOURCE_FILENAME and DBX_OUTPUT_ENUM and
	DBX_WORKING_DIRECTORY.

	* system.h: Poison DBX_LBRAC_FIRST, DBX_OUTPUT_ENUM,
	DBX_OUTPUT_SOURCE_FILENAME and DBX_WORKING_DIRECTORY.

	* config/frv/frv-protos.h: Remove unused const_section
	declaration.
	* config/vax/vax-protos.h: Likewise.

	* output.h: Remove CONST_SECTION_ASM_OP usage.

	* system.h: Poison CONST_SECTION_ASM_OP.

	* crtstuff.c (__do_global_dtors_aux): Remove usage of CRT_GET_RFIB_TEXT
	(frame_dummy): Likewise.
	* unwind-dw2-fde-glibc.c (_Unwind_IteratePhdrCallback): Likewise.
	* system.h: Poison CRT_GET_RFIB_TEXT.

From-SVN: r67423