Fix gcc-4.0 compile warnings and errors.

Fix gcc-4.0 compile warnings and errors.

configure.in: Make sure socklen_t is defined.

src/chanserv.c (bad_channel_ban): Make victimCount unsigned.

src/ioset.c (ioset_run): Fifth argument to getsockopt() should be
  socklen_t.

src/ioset.h (clock_skew): Undeclare; it is defined as static.

src/nickserv.c (is_secure_password): Create appropriately typed local
  variable for third argument of dict_find().

src/opserv.c (opserv_bad_channel): Likewise.

src/proto-p10.c (call_oper_funcs): Declare at file scope rather than
  locally to mod_usermode() function.

src/proto.h (dead_users): Undeclare; it is defined as static.

src/saxdb.c (saxdb_write_int): Fix type of string buffer.
git-archimport-id: srvx@srvx.net--2005-srvx/srvx--devo--1.3--patch-24