0.15:
  man page update (document stralloc return values)
  add stralloc_chop and stralloc_chomp
  add buffer_putsa, buffer_get_token_sa and buffer_getline_sa
  extended uudecode test.  See comment at top for details.
  fix #include in ndelay*.3 (Hynek Schlawack)
  add stralloc_diff and stralloc_diffs (my invention)
  scan_ip6 returned 1 for "::" (Uwe Ohse)
  add el-cheapo MIME decoding to test/uudecode
  make install forgot to install ndelay.h
  fix typos in several man pages (Hynek Schlawack)
  add stralloc versions of textcode API (Kai Ruemmler)
  add html to textcode ('<' to '&lt;' etc)
  add fmt_human and fmt_humank (format numbers ala ls -H/-h)
  add fmt_httpdate and scan_httpdate
  fix typo breaking buffer_GETC in buffer (Marcus Winkler)
  fix typo breaking fmt_long for dest==NULL
  add fmt_*longlong()
  add range check to scan_ulong, scan_ulonglong, scan_uint and
    scan_ushort
  extended socket API; you can now pass NULL for results you don't want
  rename Makefile to GNUmakefile; create Makefile target
  add buffer_get_token_pred and buffer_get_token_sa_pred