In this version, more debugging information has been added,
as well as the ability to control more of the zone check
initialisation through environment variables (ZC_IP_STACK for
IP stack detection, etc.). The list of root servers has been
updated to take B IP address changes into account. Two
options have been added to tailor HTML page generation. The
profile
selection has been fixed (all profiles are now available). The
DNS resolver is now a little less aggressive in UDP and the
CNAME chain is followed when checking for reverse.
