Major change of the channels management. p_format->i_channels disappeares
and is replaced by two members : i_physical_channels and i_original_channels. i_physical_channels describes the channels which are effectively present in the stream (at the current point of the aout pipeline), whereas i_original_channels represents the channels we used to constitute the stream. For instance a mono stream (FRONT_CENTER) may emanate from a FRONT_LEFT channel of a STEREO stream. Additionally, this contains hooks to dynamically select the audio device and the channels configuration. In order to do that, all aout plugins, and all interface plug-ins need to be adapted. Currently only SDL (partially OSS) and the rc interface have been adapted, please use them as a guide. Other aout plug-ins have been temporarily disabled. IMPORTANT : if you need a working sound output, DO NOT UPDATE YOUR TREE for several days until we fix that. * modules/misc/network/ipv4.c: Fixed a long-standing segfault when saving preferences and asking for multicast.