Add panics to make older Go versions happy
Merge branch 'master' of github.com:miekg/dns
Unused
Clean up the nsecx file

Stuff never worked. Remove it for now
typo in comment
# Last 5 commit messages
# ----------------------
# 10ad5a4 Merge branch 'master' of github.com:miekg/dns [Miek Gieben]
# ac0703b Handle MixCase queries again. [Miek Gieben]
# dbef97a Add MixCase query test [Miek Gieben]
# 7ef3106 Add panics to make older Go versions happy [Miek Gieben]
# 980f5e9 Merge pull request #51 from r4um/master [Miek Gieben]
copy the optimization from go tip into here
Some work in outstanding query de-deplication
Merge branch 'master' of github.com:miekg/dns
Add copy for an entire message, private for now
Adapt singleinflight a little to fit my needs better
Perform query inflight deduplication

Taking a queue from Go tip, I copied over the new code and tweaked
it a bit for use in Go DNS.
Implement outstanding query detection.

Copied from the standard library and adapted to Go DNS.
Updates
update the readme a bit
Better name
Add (failing) test for zero rdata
Add test to zero rdata (for dyn updates)

This triggerd a bunch of failures, the most important one
is the packing and zero length domain name now works.
Add unpack test too
comment update
if A or AAAA is nil return empty string

Now it returns <nil> for nil value, which can not be parsed
back to the record.