sparc.c: Remove all references to TARGET_EPILOGUE.

sparc.c: Remove all references to TARGET_EPILOGUE.

        * config/sparc/sparc.c: Remove all references to TARGET_EPILOGUE.
        (sparc_emitting_epilogue): New.
        (leaf_label, output_return, sparc_return_peephole_ok): Remove.
        * config/sparc/sparc-protos.h: Update.
        * config/sparc/sparc.h (MASK_EPILOGUE, TARGET_EPILOGUE): Remove.
        (TARGET_SWITCHES): Update.
        * config/sparc/sparc.md (return): Remove.
        (return_*): Use sparc_emitting_epilogue, not !TARGET_EPILOGUE.
        * config/sparc/freebsd.h, config/sparc/linux64.h, config/sparc/lite.h,
        config/sparc/liteelf.h, config/sparc/netbsd-elf.h,
        config/sparc/sol2-sld-64.h, config/sparc/sol2.h,
        config/sparc/sp64-aout.h, config/sparc/sp64-elf.h,
        config/sparc/sp86x-aout.h, config/sparc/sp86x-elf.h,
        config/sparc/splet.h, config/sparc/vxsparc64.h (TARGET_DEFAULT):
        Remove MASK_EPILOGUE.
        * doc/invoke.texi: Update.

From-SVN: r51626