* configure.ac.in: removed the -fno-exceptions gcc option from the compilation of the skins plugin as it might be needed after all.
* modules/demux/m3u.c: upped the priority of the m3u demux as some m3u files were mistaken for ts files.
* include/configuration.h: added a CONFIG_ITEM_DIRECTORY config type.
* modules/gui/wxwindows/*: the preferences dialog should be fully useable now.