+03Feb23=======================================================================
+1. Fix is_ipaddr to accept trailing '::' on IPV6 addresses.
+2. Fix and extend the TEST program 'showdx' so that it now works on the mojo
+ branch. Type 'showxd -?' for more information or read the source. This is
+ NOT a user program, but is will accept most sh/dx expressions.
+3. Fix create_master_badip_files.pl so that it does not emit IP addresses
+ that the system is_ipaddr() function fails.