Add and use config/i386/gnu-user-common.h
* config.gcc: Add i386/gnu-user-common.h before all
i386/gnu-user.h and i386/gnu-user64.h usages.
* config/i386/gnu-user-common.h: New.
* config/i386/gnu-user.h (CPP_SPEC): Moved to gnu-user-common.h.
(CC1_SPEC): Likewise.
(ENDFILE_SPEC): Likewise.
(DEFAULT_PCC_STRUCT_RETURN): Likewise.
(TARGET_TLS_DIRECT_SEG_REFS_DEFAULT): Likewise.
(TARGET_OS_CPP_BUILTINS): Likewise.
(LIBGCC2_HAS_TF_MODE): Likewise.
(LIBGCC2_TF_CEXT): Likewise.
(TF_SIZE): Likewise.
(TARGET_ASM_FILE_END): Likewise.
(STACK_CHECK_MOVING_SP): Likewise.
(STACK_CHECK_STATIC_BUILTIN): Likewise.
* config/i386/gnu-user64.h: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@186427
138bc75d-0d04-0410-961f-
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