gnu-user.h: Copy from linux.h.

gnu-user.h: Copy from linux.h.

	* config/i386/gnu-user.h: Copy from linux.h.  Update comments.
	(LINK_EMULATION, GLIBC_DYNAMIC_LINKER): Remove.
	(SUBTARGET_EXTRA_SPECS): Use GNU_USER_LINK_EMULATION and
	GNU_USER_DYNAMIC_LINKER.
	(MD_UNWIND_SUPPORT, REG_NAME): Remove.
	* config/i386/gnu-user64.h: Copy from linux64.h.  Update comments.
	(GLIBC_DYNAMIC_LINKER32, GLIBC_DYNAMIC_LINKER64): Remove.
	(LINK_SPEC): Use GNU_USER_DYNAMIC_LINKER32 and
	GNU_USER_DYNAMIC_LINKER64.
	(MD_UNWIND_SUPPORT, REG_NAME): Remove.
	* config/i386/kfreebsd-gnu.h (LINK_EMULATION): Change to
	GNU_USER_LINK_EMULATION.
	* config/i386/linux.h (TARGET_ASM_FILE_START_FILE_DIRECTIVE,
	DEFAULT_PCC_STRUCT_RETURN, TARGET_TLS_DIRECT_SEG_REFS_DEFAULT,
	ASM_COMMENT_START, DBX_REGISTER_NUMBER, NO_PROFILE_COUNTERS,
	MCOUNT_NAME, SUBTARGET_FRAME_POINTER_REQUIRED, SIZE_TYPE,
	PTRDIFF_TYPE, WCHAR_TYPE, WCHAR_TYPE_SIZE, TARGET_OS_CPP_BUILTINS,
	CPP_SPEC, CC1_SPEC): Remove.
	(LINK_EMULATION): Change to GNU_USER_LINK_EMULATION.
	(GNU_USER_DYNAMIC_LINKER): Define.
	(ASM_SPEC, SUBTARGET_EXTRA_SPECS, LINK_SPEC, ENDFILE_SPEC,
	ASM_OUTPUT_ALIGNED_BSS, ASM_OUTPUT_MAX_SKIP_ALIGN,
	ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX, CRT_GET_RFIB_DATA,
	LIBGCC2_HAS_TF_MODE, LIBGCC2_TF_CEXT, TF_SIZE,
	TARGET_ASM_FILE_END, STACK_CHECK_MOVING_SP,
	STACK_CHECK_STATIC_BUILTIN, TARGET_THREAD_SSP_OFFSET,
	TARGET_CAN_SPLIT_STACK, TARGET_THREAD_SPLIT_STACK_OFFSET): Remove.
	* config/i386/linux64.h (TARGET_OS_CPP_BUILTINS, CPP_SPEC,
	CC1_SPEC, DEFAULT_PCC_STRUCT_RETURN,
	TARGET_TLS_DIRECT_SEG_REFS_DEFAULT, SPEC_32, SPEC_64, ASM_SPEC,
	LINK_SPEC, ENDFILE_SPEC, MULTILIB_DEFAULTS, LIBGCC2_HAS_TF_MODE,
	LIBGCC2_TF_CEXT, TF_SIZE, TARGET_ASM_FILE_END): Remove.
	(GNU_USER_DYNAMIC_LINKER32, GNU_USER_DYNAMIC_LINKER64): Define.
	(STACK_CHECK_MOVING_SP, STACK_CHECK_STATIC_BUILTIN,
	TARGET_THREAD_SSP_OFFSET, TARGET_CAN_SPLIT_STACK,
	TARGET_THREAD_SPLIT_STACK_OFFSET): Remove.
	* config/i386/gnu.h (GLIBC_DYNAMIC_LINKER): Change to
	GNU_USER_DYNAMIC_LINKER.
	* config/kfreebsd-gnu.h (GLIBC_DYNAMIC_LINKER): Change to
	GNU_USER_DYNAMIC_LINKER.  Unconditionally undefine and redefine.
	* config/knetbsd-gnu.h (GLIBC_DYNAMIC_LINKER): Change to
	GNU_USER_DYNAMIC_LINKER.  Unconditionally undefine and redefine.
	* config/kopensolaris-gnu.h (GLIBC_DYNAMIC_LINKER): Change to
	GNU_USER_DYNAMIC_LINKER.  Unconditionally undefine and redefine.
	* config.gcc (i[34567]86-*-linux* | i[34567]86-*-kfreebsd*-gnu |
	i[34567]86-*-knetbsd*-gnu | i[34567]86-*-gnu* |
	i[34567]86-*-kopensolaris*-gnu, x86_64-*-linux* |
	x86_64-*-kfreebsd*-gnu | x86_64-*-knetbsd*-gnu): Use the new
	headers.

From-SVN: r172271