inotify: proper fix for issue1542 (partially reverting 67e59a9886d5) issue1542 description: Unknown files (?) placed in a directory are still marked as present and unknown when the containing directory is moved out of the repository scope. Why 67e59a9886d5 was bad: * When the problem we're addressing only deals with unknown files, the fix to updatestatus applies for all statuses * The only reason to move the call schedule_work(wpath, 'd') seems to be that it allowed an updatestatus call on the deleted directory, in deleted(). But deleted() should not be called on directories in the first place. * After fixing an independant issue (1371), test-inotify-issue1542 was failing Fix: When processing a deletion of a directory, walk the tree of the unknown files and remove the entries from repowatcher. This step does not need to be added in the generic scan() routine: it is only necessary on a directory deletion.