* modules/gui/skins/*: got rid of wxdialogs.h, the skins plugin is now sharing wxwindows.h with the wxwindows plugin.
* modules/video_output/directx/events.c: fixed non-initialized variable.
* modules/gui/wxwindows/*: misc improvements to the playlist window (added an "Open MRL" menu as well as menus to load and save a playlist, we also make use of the "intf-change" playlist object variable now).
* src/playlist/playlist.c: the playlist file is opened in text mode, no win32 eol hack is needed.
* src/misc/configuration.c, include/configuration.h: new config_ResetAll() function to reset all config options to their original values (you still need to config_SaveConfigFile()).
* modules/gui/wxwindows/preferences.cpp: new "Reset All" button in the preferences panel.