darwin.h (TARGET_OPTION_TRANSLATE_TABLE): Add -segaddr, -segs_read_only_addr and -segs_read_write_addr.

       * config/darwin.h  (TARGET_OPTION_TRANSLATE_TABLE): Add -segaddr,
       -segs_read_only_addr and -segs_read_write_addr.
       (WORD_SWITCH_TAKES_ARG): Same.
      (LINK_SPEC): Same.
       * doc/invoke.texi: Document -segaddr, -segs_read_only_addr and
       -segs_read_write_addr.

       * gcc.dg/darwin-ld-20040828-1.c: New test.
       * gcc.dg/darwin-ld-20040828-2.c: New test.
       * gcc.dg/darwin-ld-20040828-3.c: New test.

From-SVN: r87197