Squashed 'third_party/github.com/miekg/dns/' content from commit 9c75b3c

git-subtree-dir: third_party/github.com/miekg/dns
git-subtree-split: 9c75b3cdc2c4440686f518bfac0c946fc38cc6b0
Merge commit 'd0553957566c6c5da277965dc15393f86cf70a16' as 'third_party/github.com/miekg/dns'
Use local third-party module