OAK-3159 - Clarify the semantics of some configuration properties
OAK-3159 - Clarify the semantics of some configuration properties

- Specify how relative paths are handled in both SegmentNodeStoreService
  configurations.
- Remove duplicated description of the customBlobStore property in the legacy
  SegmentNodeStoreService configuration.
- Clarify what happens if customBlobStore is false for both the
  SegmentNodeStoreService configurations.


git-svn-id: 67138be12999c61558c3dd34328380c8e4523e73@1770364 13f79535-47bb-0310-9956-ffa450edef68

davidegiannella/jackrabbit-oak,davidegiannella/jackrabbit-oak,davidegiannella/jackrabbit-oak,davidegiannella/jackrabbit-oak,davidegiannella/jackrabbit-oak