* alpha-nat.c (fetch_osf_core_registers): Use ALPHA_REGISTER_SIZE

    * alpha-nat.c (fetch_osf_core_registers): Use ALPHA_REGISTER_SIZE
        instead of ALPHA_MAX_REGISTER_RAW_SIZE.
        (supply_gregset): Likewise.
        * alpha-tdep.c (alpha_store_return_value): Likewise.
        (alpha_get_longjmp_target): Likewise.
        (alpha_register_name): Constify array.
        (alpha_gdbarch_init): Remove deprecated_fp_regnum,
        deprecated_register_size, deprecated_register_bytes,
        deprecated_max_register_raw_size, deprecated_max_register_virtual_size.
        * alpha-tdep.h (ALPHA_MAX_REGISTER_RAW_SIZE): Remove.
        (ALPHA_MAX_REGISTER_VIRTUAL_SIZE): Remove.