Revision 1687152

[Reverted in r1692658]

Merge the 1.7.x-r1542765 branch:

 * r1542765, r1571214
   Add Sqlite index information.
   Justification:
     Adding this information explains to Sqlite how we use our indexes. While
     Subversion 1.7 doesn't depend on this as much as 1.8 as we didn't tune the
     queries as much at that time, this information will make several queries
     use indexes instead of table scans.
   Branch:
     ^/subversion/branches/1.7.x-r1542765
   Votes:
     +1: rhuijben, stefan2, brane