[3020] Fix text that was broken and lost from commit f3b0c13a
[3020] Format commands properly
[3020] Add config commit
[3020] Describe in the BIND 10 guide how to add and use a static data source
[3020] typo fix
[3020] Add a description for the static zone
[3020] Add text about re-enabling the static.zone file
[3020] Update text that we assume the resolver is running on localhost
[3020] Fix comments at the start of static.zone file
[3020] Update instructions to test the auth server directly
[2935] Remove the "checkin" callback for asiodns server classes

Note that this commit just removes it from libb10-asiodns. Other
dependencies have not been updated yet, as they require the checkin
callback. Please see ticket #2935.

With this commit, overall BIND 10 tree is broken.
[2935] Remove use of checkin callback in libb10-resolve
[2935] Cleanup checkin callback from b10-auth
[2935] Cleanup checkin callback from b10-resolver
[2935] Remove unused classes

This functionality seems to be handled inside CC session itself
now. ModuleCCSession::start() adds startCheck() and handles
checkCommand() there.
Merge branch 'trac3020'
Merge branch 'trac2935'