Because having two differents events for the same objective is way too
confusing (libvlc_MediaParsedStatus was recently added by me).

libvlc_MediaParsedCharged is now always sent after a call to
libvlc_media_parse_*() (this was not the case if the pre-parsing was skipped).

The core vlc_InputItemPreparsedChanged event is now only attached from the
media player. This allows the libvlc_MediaParsedCharged event to be sent when a
media is parsed from a media player.

/!\ Behavior change in libvlc API /!\

The libvlc_event_t.u.media_parsed_changed.new_status value changed, this is now
a libvlc_media_parsed_status_t. Before this patch, this value was always set to
true, even in case of parse failure/skipped. Now this value can be skipped (1),
failed (2) or done (3). There should be no changes for users that were checking
if new_status was true, since this events was called for these 3 cases (that
are all > 0).