* config/i386/biarch64.h (TARGET_64BIT_DEFAULT): Define with value.
        (TARGET_BI_ARCH): Likewise.
        * config/i386/i386.h: Test TARGET_64BIT_DEFAULT by value.
        (TARGET_SWITCHES): Combine target defaults here not in TARGET_DEFAULT.
        (TARGET_64BIT_DEFAULT): Default to 0.
        (TARGET_DEFAULT): Default to MASK_OMIT_LEAF_FRAME_POINTER.

From-SVN: r54032