Enable Aldb_Delta Support for Update_Flags

Checks whether Aldb_delta is insync prior to updating flags.  If insync, resyncs aldb_delta after update_flags, if out of sync, update flats is still permitted to run, but no subsequent update of aldb_delta is made afterwards.

There is no potential for update_flags to overwrite a link entry, so it shouldn't fail if out of sync.

Partially fixes krkeegan/misterhouse#5

Need to make a similar patch for update_local.