UTF-8.

 * move Unicode stuff to a separate file

 * share/html/* : sepcify UTF-8 as XML encoding
 * httpd.c : add a bunch of "const"

* implemented transcoding when streaming -- might need some testing, if anyone on OSX got the time (refs #271)

 * old: convert

* libvlc: Conversion functions (needs performance improvement)
          Convert filenames from command line
* SAP, Skins2: no perform own UTF-8 conversion
* file, playlistold : convert
* wx, winCE : assume UTF-8

I assume the intent was "&= ~" which is not the same.

Needs review.

NB: Likely to break your cache and preferences

   along with libjpeg and libtiff. SDL has been heavily patched not to
   hijack main() on Darwin, you should do the same for other platforms.
   Also fixed a huge number of typos in the Makefile, and reverted to
   an old version of ffmpeg because our friends there are breaking
   everything again.
 * Makefile.am: Re-added the "Default" directory for Xcode 2.1.

to an already destroyed map ! (and a crash with MSVC runtime...)

  (remove the dependency of skins2 to ffmpeg for PNG loading)

but it is even more ugly than before