* archures.c: Reindent many functions. Change CONST to const.
(bfd_arch_info_type): Make arch_name const. Remove disassemble;
nothing set it anyhow. Make next const.
(bfd_arch_info_list): Remove.
(bfd_archures_list): Rename from archures_init_table. Change from
a table of function pointers to a table of bfd_arch_info_type
structure addresses.
(bfd_scan_arch): Rewrite accordingly. Return a const pointer.
(bfd_lookup_arch): Likewise.
(bfd_set_arch_info): Rewrite accordingly. Change argument to be a
const pointer.
(bfd_default_arch_struct): Make const.
(bfd_arch_init, bfd_arch_linkin): Remove.
(bfd_get_arch_info): Return a const pointer.
* init.c (bfd_init): Don't call bfd_arch_init.
* bfd.c (struct _bfd): Make arch_info const.
* bfd-in2.h: Rebuild.
* libbfd.h: Rebuild.
* configure.in: Put & before everything in $selarchs.
* configure: Rebuild.
* cpu-*.c: Change bfd_*_arch from a function which calls
bfd_arch_linkin to a const structure.
* ieee.c (ieee_object_p): Make arch const.
