* elfxx-ia64.c (elfNN_ia64_check_relocs): Handle IPLT relocs.

    * elfxx-ia64.c (elfNN_ia64_check_relocs): Handle IPLT relocs.
        (allocate_dynrel_entries): Likewise.
        (elfNN_ia64_relocate_section): Likewise.  Set REL addends correctly.
        (set_pltoff_entry): Likewise.
        (ia64_howto_table): Remove R_IA64_SEGBASE, and R_IA64_EPLT[ML]SB
        (elfNN_ia64_reloc_type_lookup): Likewise.
        (elfNN_ia64_install_value): Likewise.
        (elfNN_ia64_relocate_section): Likewise.
        * reloc.c (BFD_RELOC_IA64_SEGBASE): Remove.
        (BFD_RELOC_IA64_EPLTMSB, BFD_RELOC_IA64_EPLTLSB): Remove.