TrackerMinerFS: Do recursive index on move ops where whe source isn't known.
TrackerMinerFS: Do recursive index on move ops where whe source isn't known.

If a directory being moved didn't have the source indexed, TrackerMinerFS
will recursively index it.

hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker