add basic nsupdate module + associated changes to client and server to use it
add basic nsupdate module properly this time
next stage of nsupdate module + fix missing escape in regex (cheers Matt!)
nsupdate module exporting most updates successfully
nsupdate module almost completed
nsupdate tool complete, beta version, should work for different DNS servers per zone now
fixed up metadata for nsupdate module
finish up last nsupdate entries for more obscure DNS entries like NSEC3PARAM, RRSIG etc
remove requirement for Data::Dumper
remove useless export types
fixed up unnecessary code blocks, comments etc, fixed indenting with perltidy etc
fixed up perltidy messing up some if and variable layouts
Merge pull request #32 from abeeson/master

nsupdate export module code and relevant client / server changes to use it