* modules/packetizer/mpegvideo.c, modules/mux/mpeg/*: fixed the dts/pts calculation in the mpegvideo packetizer. It should now handle streams where all the pictures don't have the same duration (eg. 3:2 pulldown). We don't calculate anymore the pts for every frame as it is impossible to do so for non low-delay streams.

* configure.ac.in: added an --enable-mostly-builtin option to avoid having too many plugins.
* modules/gui/skins/src/*: reverted the last BASIC_SKINS patch (BASIC_SKINS was not broken, the changes were done on purpose).
* modules/gui/skins/src/dialogs.[cpp,h]: ran dos2unix on these 2 files.

  the share directory

  but there are still other segfaults sometimes in FileInfo !!

  CTRL button (as expected in a normal playlist !)
  TODO: - do the same under windows
        - replace all button constants 1/2 by MOUSE_LEFT/MOUSE_RIGHT

* removed all the compilation warnings
* fixed LOTS of memory leaks in skins (gibalou, you should try valgrind
  on wxwindows plugin ;)

* modules/mux/mpeg/pes.c: allow cases where we don't write a pts.
* modules/stream_out/display.c: handle cases where we don't have a pts/dts.

* modules/gui/skins/src/vlcproc.cpp: the "play" action will trigger the open dialog if the playlist is empty.

  In vout_CreatePicture() replace i_repeat_first_field by the more useful
  i_nb_fields
* modules/gui/macosx/intf.m: Fixed a warning
* modules/codec/libmpeg2.c include/vout_synchro.h src/video_output/vout_synchro.c:
  Re-added support for slice-I streams, plus miscellaneous tweakings

  than nothing

* modules/gui/skins/x11/x11_window.cpp: avoid flicker when mapping a window.
* share/skins/default/theme.xml: playlist is hidden by default.

* modules/gui/skins/*: display the popupmenu when you right click on the interface.

* modules/gui/skins/controls/playlist.cpp: fixed a segfault when deleting
  items
* modules/gui/skins/x11/x11_graphics.cpp: implemented DrawRect

* modules/gui/skins/x11/*: fixed transparency problem. XShapeCombineRegion() needs to be called before the window is mapped.

* x11_window.*: real tooltip windows ! not perfect yet but it looks cool !
* removed compilation of gtk2 skins module. If you want it back, good luck ;)

* share/Makefile.ami, doc/Makefile.am: forgot to include some files in the "make dist".

* doc/subtitles/*, share/font-eutopiabold21.rle: new (smaller) font + scripts
and instructions to generate new fonts.

* modules/gui/skins/x11/x11_theme.cpp: removed unnecessary stuff.

  (400ms) , maybe it could be stored in the vlc config file

* modules/gui/skins/src/themeloader.cpp: small fix for tgz skins.

* modules/packetizer/mpegvideo.c: Fixed a 3:2 pulldown bug (not tested).

* modules/misc/network/ipv6.c: oups, ipv6 multicast wasn't enabled on win32. Also fixed the interface name parsing in the MRL.

  There is a lot of improvement left here.

  - Changed modules list to use Default instead of None. probably clearer to
    users.
  - Have a warning before resetting the prefs.