* modules/gui/wxwindows/streamout.cpp: clean-up for sap support.
    Added a couple of transcoding codecs (WMV2, MJPG, mp3).
    The output filename is now surrounded by quotes and the MRL is updated correctly on codec change.
* install-win32: start menu shortucts are installed in the "All Users" section.
* configure.ac: added a --with-ffmpeg-mp3lame option for when ffmpeg was compiled with mp3lame support.