lib/isccfg/cfgmgr.README contains all explainations about those
changes.
What is probably more interesting right now is to look at the
lib/isccfg/cfgmgr.h to get an idea of the interface proposal and few
changes to try it in bin/named/server.c.
Tested and working system tests: views, dlzexternal, rpz, resolver
Ongoing: rpz changes