don't doxygen by default; moved doxygen call to separate make target renamed default -doc targets to -manpages
don't doxygen by default;
moved doxygen call to separate make target
renamed default -doc targets to -manpages


benlaurie/ldns,benlaurie/ldns,NLnetLabs/ldns,threatstack/libldns,benlaurie/ldns,threatstack/libldns,gegenschall/ldns,gegenschall/ldns,threatstack/libldns,NLnetLabs/ldns,threatstack/libldns,gegenschall/ldns,benlaurie/ldns,threatstack/libldns,gegenschall/ldns,NLnetLabs/ldns,NLnetLabs/ldns