Add support for extended RCODEs and detect bad RCODEs
Add TODOs
Merge branch 'master' of github.com:miekg/dns
Merge pull request #135 from FiloSottile/ext_rcode

Add support for extended RCODEs and detect bad RCODEs
Merge branch 'master' of github.com:miekg/dns
Rename to ExtendedRcode and fix a comment
Add ErrExtendedRcode and fix up the callers
Fixup tests
Merge pull request #137 from asergeyev/master

LOC typeToParserFunc fix and mnemonics for CERT rr