configure.in (i[34567]86-*-freebsdelf): Don't include linux.h, i386/freebsd-elf.h no longer requires it.

        * configure.in (i[34567]86-*-freebsdelf): Don't include linux.h,
        i386/freebsd-elf.h no longer requires it.  Instead include svr4.h.
        * configure: Rebuilt.
        * i386/freebsd-elf.h (DEFAULT_VTABLE_THUNKS): Define.
        (ASM_COMMENT_START, ASM_APP_ON, ASM_APP_OFF, SET_ASM_OP): Likewise.
        (PREFERRED_DEBUGGING_TYPE, WCHAR_UNSIGNED): Likewise.
        (SWITCH_TAKES_ARG): Likewise.
        * i386/freebsd.h: Remove FREEBSD_NATIVE support.
        * config/t-freebsd: Moved from config/i386/ so it can used for all
        FreeBSD targets.

From-SVN: r27305