* Pull in varnish version autoconf logic from libvmod-querystring
  Thanks to Dridi Boukelmoune <dridi.boukelmoune@gmail.com>

* Move allocation of memory for dcs_match to caller

* generate dcs_match_mem.h defining DCS_MATCH_MEM_SZ which is the memory size
  required by dcs_match

* move gen* perl and c source to the gen directory to avoid issues with
  make check and recursive subdirs

* first changes to make splint happier