0.25:
  array_allocate no longer truncates the array
  array_get now not only checks whether the element fits in the
    allocates space, it also needs to be in the initialized space.
  add -D_REENTRANT to CFLAGS so libowfat can be used in multi-threaded
    programs
  further Windoze support (test/io5.c works, gatling still doesn't)
    This is just to get gatling to work, I may remove it again after
    that.
  implement Nikola's idea to remove limit number of strings in errmsg
  add taia_half
  add cdb
  add rangecheck.h
  add io_block
  make socket_(tc|ud)p[46] actually return non-blocking sockets as
    documented (Richard Lyons)
  fix for NetBSD 3.0 (Their /sys/types.h actually does not define u_char
    unless you #define _NETBSD_SOURCE, and then their CMSG_* macros use
    it.  This is horrible even by OpenBSD standards)
  remove support for ip6.int (it's no longer delegated)
  add asm versions of imult64 and umult64 for x86_64
    (22 cycles -> 12 cycles on my Athlon 64)
  use size_t and ssize_t instead of unsigned long et al
  add iob_bytesleft
  don't leak memory in test/httpd