OAK-633: SegmentMK: Hierarchy of journals

Drop this feature for now as we won't have time to complete it
before Oak 1.0 / Jackrabbit 3.0, and keeping it around complicates
other work.

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1575327 13f79535-47bb-0310-9956-ffa450edef68
OAK-593: Segment-based MK

Make MemoryStore implement SegmentStore directly to make it easier to simplify caching in AbstractStore.
Drop SegmentStore.isInstance().

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1575339 13f79535-47bb-0310-9956-ffa450edef68
OAK-593: Segment-based MK

Remember to check the segment that's currently being written

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1575342 13f79535-47bb-0310-9956-ffa450edef68
OAK-593: Segment-based MK

Implement HttpStore without AbstractStore to make the caching code easier to customize

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1575352 13f79535-47bb-0310-9956-ffa450edef68
OAK-593: Segment-based MK

Inline AbstractStore into FileStore to make the caching code easier to push down to RandomAccess

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1575372 13f79535-47bb-0310-9956-ffa450edef68
OAK-593: Segment-based MK

typo

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1575387 13f79535-47bb-0310-9956-ffa450edef68
OAK-516 Create LdapLoginModule based on ExternalLoginModule (wip)

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1575468 13f79535-47bb-0310-9956-ffa450edef68
OAK-516 Create LdapLoginModule based on ExternalLoginModule (wip)

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1575469 13f79535-47bb-0310-9956-ffa450edef68
OAK-1507 - added MLT feature for Lucene index

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1575557 13f79535-47bb-0310-9956-ffa450edef68
OAK-1520 Native pass-through queries combined with other conditions might not work

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1575869 13f79535-47bb-0310-9956-ffa450edef68
Merge branch 'upstream-trunk' into OAK-1263
OAK-1263 added convenience methods around the OrderDirection enum
OAK-1263 trivia javadoc fix