* config/mips/elf.h, config/mips/elf64.h
        (CTORS_SECTION_ASM_OP): Define.
        (DTORS_SECTION_ASM_OP): Define.
        (EXTRA_SECTIONS): Define.
        (INVOKE__main): Define.
        (NAME__MAIN): Define.
        (SYMBOL__MAIN): Define.
        (EXTRA_SECTIONS_FUNCTIONS): Define.
        (SECTION_FUNCTION_TEMPLATE): Define.
        (ASM_OUTPUT_CONSTRUCTOR): Define.
        (ASM_OUTPUT_DESTRUCTOR): Define.
        (CTOR_LIST_BEGIN): Define.
        (CTOR_LIST_END): Define.
        (DTOR_LIST_BEGIN): Define.
        (DTOR_LIST_END): Define.
        (LIB_SPEC): Define.
        (STARTFILE_SPEC): Define.
        (ENDFILE_SPEC): Define.
        * config/mips/linux.h:  Undefine all of the above.
        * config/mips/rtems64.h: Likewise.
        * config/mips/t-r3900: Likewise.
        * config/mips/t-elf: New file.
        * config/mips/vxworks.h: New file.
        * configure.in (mips-wrs-vxworks): Use mips/vxworks.h.
        (mips*-*-*elf*):  Use t-elf instead of t-ecoff.
        * configure: Regenerate.

From-SVN: r26446