Should show current selection little better

It will allow to removes vlc_object_find(_*) hacks.

To be used by both the 1.0-branch and 1.1. Already uploaded for all three platforms.

This really should default to off everywhere except in VLC though.

Also refactor. Deletion and loading are now distinct functions.

Note that CLOCK_FREQ is already a 64-bits integer, so the cast to
mtime_t is not needed (anymore).