OAK-1877: Hourly async reindexing on an idle instance

Hide the indexer status information under /:async so it won't end up re-triggering the indexer

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1602796 13f79535-47bb-0310-9956-ffa450edef68
OAK-1877: Hourly async reindexing on an idle instance

Remove debug print

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1602797 13f79535-47bb-0310-9956-ffa450edef68
OAK-1804: TarMK compaction

Drop the write number -based compaction threshold as it is troublesome
with large repositories where the size of the repository could exceed
the number of tar files used by compaction.

Move JVM gc to the point where it's most needed, i.e. just before cleanup.

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1602800 13f79535-47bb-0310-9956-ffa450edef68