and $L, except that the hour is not printed if it is 0.

* builder.cpp: don't build a subbitmap or a fontbitmap if it already
  exists (so if the xml contains elements with the same id, the first
  valid one is kept)

   "up" state of the checkbox is displayed wrongly during a few milliseconds

* modules/codec/ffmpeg: try a bit harder to enable direct-rendering (some codec parameters are not yet set when opening the codec).

   images for the state of the stream (playing/paused/stopped)

   the cursor cannot be created. This allows using the slider in some winamp
   skins which do not use cursors.

   bitmap (this is more flexible than the contrary)

    instance when listing the plugins or asking for the usage.

    thanks to titer for noticing this.

oleobject.cpp: fixed order of notifications for buggy containers like Delphi, added default size at activation
plugin.cpp: set configuration width/height when resizing control

stability and mitigate temporary OS/network jitter problems

we can't operate with 4 KB blocks since with low bitrate MP3 streams
we'll  end up putting too many PCRs into one block.

* all: the slider background is now in a dedicaded tag 
"SliderBackground". The number of images can now be parametrized
 in both directions, and the offset between 2 images (padhoriz and
 padvert) is no more hardcoded

 Now it starts to really look cool ;-)
* builder.cpp: look for fonts in the resource path if the
 font file cannot be found in the theme itself
* ctrl_slider.cpp: fixed the hack for winamp: the bar images
 are separated by 2 rows, not 3...

* modules/demux/mp4/mp4.c: fix some signed/unsigned compiler warnings. Patch by Daniel Stranger (vlc at schmaller dot de).