Fixes for LP64 models; announce IPv6 support.

Fixes for LP64 models; announce IPv6 support.

src/alloc-slab.c (SMALL_CUTOFF): Adjust to a multiple of 8.

src/alloc-srvx.c (srvx_malloc): Fix format string for LP64.

src/md5.h (UINT4): Fix typedef for LP64.

src/opserv.c (cmd_warn): Fix whitespace.

src/proto-p10.c (irc_server): Announce IPv6 support.
git-archimport-id: srvx@srvx.net--2005-srvx/srvx--devo--1.3--patch-33