* Embedded Vout should work now
* To create an embedded vout, just create a custom view of type VLCEmbeddedVoutView in interface builder
* Just make sure you define the view as resizeable
* Hotkeys and mose events should work
* Tests with the mozilla plugin are welcome

(da big courmischage)

  main thread (one more step to hopefully fix #45)
 macosx/controls.m: fixed a tiny memleak

Some details:

* This was mostly taken verbatim from revision:5717 (before the vout
  Mozilla support was removed), though it's been edited pretty thoroughly,
  and is now much more commented.

* The "normal" vout display should be completely unaffected, since the
  plugin-relevant code paths are only taken when p_vout->p_sys->b_embedded is
  set to VLC_TRUE.  (I've tested the normal VLC.app, and it seems fine.)

* There are still some problems with the plugin when the Mozilla window is
  resized a lot.  I suspect this is due to threading issues with
  QuickDraw, but I don't know enough about QuickDraw to be sure.  Help
  with this would be very welcome.

* The original patch in revision:5717 optimised the plugin display
  slightly, by using a mask (clipping region) so that QuickDraw only
  updated the plugin's area of the dirty region.  I elected not to use
  a mask, since I thought the extra code complexity (i.e. lots more if()
  branches) isn't worth the incremental speedup.  (If, in fact, there was
  a speedup at all -- the extra overhead induced by calculating the
  intersection of the dirty region with the mask may have offset any
  benefits: only benchmarks will tell ...)

 macosx/vout*.m: cleaning

  souls without Altivec. The new drawing was considerable slower to them.

* Updated TODO list

 + macosx/vout*: --macosx-vout and --macosx-opengl-effect
                 no longer exist

  + vout.m contains the common code for the QT video output and the
    GL provider (window creation, events handling)
  + opengl.c: higher priority on OS X
 Things are a bit broken atm, any help to debug is welcome ;p