0.26:
  fix really pathological case where io_timeouted would never
    start over from the beginning because always new accept()ed
    connections came in and got newer, higher descriptors since the last
    io_timeouted loop.  (Dirk Engling)
  add some int overflow check macros to rangecheck.h
  fmt_ip6 compresses at best spot, not at first spot (Nikola Vladov)
  use inttypes.h to declare ints in uint*.h
  escape more in fmt_ldapescape
  try to catch malicious input in textcode fmt_* functions
  fmt_xlonglong was utterly broken (Johannes Vetter)