http-interface: - changed logic so playlist is only downloaded initially and on modification of playlist

no longer re-downloads playlist on each item change (this was causing
significant delays (>10sec) in the http service with large playlists).. now,
the playlist UI is updated locally based on information returned from
status.xml
Signed-off-by: Ilkka Ollakka <ileoo@videolan.org>

large playlists can take >10 seconds to load. since the xmlhttp object is
common within the page, multiple /status.xml requests would occurr (1 per sec)
before the playlist was loaded cancelling the /playlist.xml request.. i moved
the xmlhttp request object to a global variable. it's now checked to see if
there are any outstanding/active requests before submitting a new request. -
improved playlist display of large playlists.
Signed-off-by: Ilkka Ollakka <ileoo@videolan.org>

Seriously, HD logs have 12000 of lines of logs because of that... This is beyond ridiculous.

This can be used to restart a plugin without going through the whole
module_need(). This only makes sense if you are sure that the plugin
will accept the object parameters. In other words, do not change any
object parameter that could influence the plugin probing decision.

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Revert "qt4_vlm: remove double call to VLMWrapper::Edit* functions (already called by the constructor)."

This reverts commit 2e1e9ce5.

VLC code page is UTF-8, not ANSI.

Also remove "what" programmers did (impossible to maintain) and
email addresses

PIX_FMT_RGBA is not a define, but an enum member.
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>