Remove outdated info.
Unused imports.
Fix missing logical_log_rotation_threshold setting in docs.
Merge pull request #1159 from nawroth/1.9-fix-logical_log_rotation_threshold

1.9 fix logical log rotation threshold docs
Changed the HA REST API so that it returns "UNKNOWN" when it's neither master nor slave.
Added a unit test to drive out the functionality via a local binding.
Changed the HA REST API so that it returns "UNKNOWN" when it's neither master nor slave.
Added a unit test to drive out the functionality via a local binding.
Updating the master info docs to reflect the existence and prominence of the UNKNOWN state.
 neo4j-backup exits with status 1 in case of  foreign destination
Merge pull request #1163 from cleishm/exitcode_backup

 neo4j-backup exits with status 1 in case of  foreign destination
Now uses multiple threads to send messages, so that one faulty receiving instance cannot block messages to other instances
Converts host names to IP addresses on startup, so that all internal logic works on IPs
ClusterManager repair kits now start more services
Log connection problems as debug level
Now routes Netty logging to messages.log
Fixed instance repairing in test kit
Unused imports.
Don't do double elections on cluster startup. The join will make an election so no need to make an explicit election on create
Updated logging messages
Updated custom-logback.xml in all editions to have right format and converters
Fixes a race condition between index population and incoming updates

where the index could end up having duplicates (or more) for any given
entry.

Solution is to change (and clearly document) the contract of the
IndexPopulator#update method in that all updates must be applied in an
idempotent manner. This will incur an overhead in the index population,
but it's a background process and updates comes in in batches so the
overhead is somewhat minimized. Data coming in via IndexPopulator#add does
not have to be checked for idempotency and that fact was clarified a bit
in the javadocs as well.
Fixing build
Better handling of lucene corruption.

 o Label scan store now halts database start if lucene is corrupt, with an exception explaining how to resolve the issue.
 o Lucene provider for new indexing now marks corrupt indexes as failed, such that the user manually must drop the index and re-create it.
Remove the last references to deprecated Transaction.finish() from production code.
Remove unused old ShortString stuff.
Remove some calls to Transaction.finish() from test code.