* all: removed some warnings

 * sap.c: compilation fix
 * win32_graphics.cpp: avoid multiple #define

    - save the prefs when they are changed, so the settings are kept
    - restore the objects to the correct values
    - fixed some compiler warnings
    - i18n support additions
    
* Extended.nib: minor tweak
    
* wxwidgets/extrapanel.cpp: fixed typo

 * modules/control/http.c: Use scandir instead of readdir since it allows
   to sort the files alphanumerically.
 * src/misc/charset.c: Fixed the declaration of vlc_fix_readdir_charset.

   play. playlist_add takes two arguments, mrl and name, and returns
   the ID of the added item. play takes 1 argument, the ID of the item,
   and returns non-zero in case of error. These functions are much more
   convenient than using the "control" tags, because you can then do
   several commands in the same page, and get the playlist ID of the
   added item, which many people complained about.

   failing.

   --sout-transcode-fps is in use.

   to ascii instead of UTF-8 because those pages actually contain only
   ascii characters, and it allows it to work with all browsers including
   those which do not support UTF-8. BTW these pages should be somewhere
   in the filesystem instead of hard-coded in the C file.

- the adjust-image-filter and the audio-filters are completely useable

ToDo:
- complete i18n support
- video-filters
- loading the settings from the prefs correctly
- probably minor layout tweaks, etc.

   charset the HTML pages will be transformed into (default no transform,
   ie. UTF-8). Call vlc_fix_readdir_charset whenever necessary, the
   http intf should now work under Mac OS X with non-ascii filenames.
   When using the 'add' command (MVLC_ADD), add an extra paramater 'name'
   besides 'mrl' to specify which name to use in the playlist.

   needed. This fixes the directory access module under Mac OS X.

   returned by Darwin's readdir). Probably we should send this upstream.

   under Mac OS X to transform UTF-8-MAC returned by readdir() into
   UTF-8. Darwin always uses UTF-8 internally, so we vlc_current_charset
   should always return UTF-8. Also made vlc_current_charset()
   thread-safe and added a few missing const's.

   UTF-8.

 * move Unicode stuff to a separate file

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