OAK-1717: Concurrent updates of ordered index in cluster may fail

Disable test for now

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1589440 13f79535-47bb-0310-9956-ffa450edef68
OAK-1751: DocumentNodeStore may detect conflict too late

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1589442 13f79535-47bb-0310-9956-ffa450edef68
OAK-1763: OrderedIndex does not comply with JCR's compareTo semantics
@Ignored test case

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1589443 13f79535-47bb-0310-9956-ffa450edef68
OAK-1764 - first round of schema/solrconfig cleaning for unneeded fields, listeners and improved cache configuration

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1589453 13f79535-47bb-0310-9956-ffa450edef68
OAK-1757: Oak eats too many CPU cycles when idle

Make the Fast clock update interval configurable for testing purposes

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1589484 13f79535-47bb-0310-9956-ffa450edef68
OAK-1762: TarMK: Fall back to normal IO when mmap fails

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1589488 13f79535-47bb-0310-9956-ffa450edef68
OAK-1717 initial refactoring for merging test. WIP