Add v4l2 section in extended pannel. The code isn't v4l2 specific at all so it could be adapted for other modules (as long as those define the "controls" variables with a list of controls that can be changed at runtime).

Rework the v4l2 control handling. Variables corresponding to controls don't have any v4l2 suffix anymore. Variables for custom controls are also created. See "vars v4l2" in the rc interface. The "controls" variables is a list of all controls available. Next step is to use all these changes in the Qt interface to create a v4l2 control pannel.

Add VLC_VAR_GET{MIN,MAX,STEP} commands. Make it possible to use VLC_VAR_INHERITVALUE with a 2nd argument which will be used as the variable name to inherit (for example you want to inherit a variable named "v4l2-hue" into a variable named "hue": vlc_value_t val; val.psz_string = strdup( "v4l2-hue" ); var_Change( p_demux, "hue", VLC_VAR_INHERITVALUE, NULL, &val ); free( val.psz_string ); )

Qt4 - MediaInfoPanel, fix a segfault and don't clear() everytime you update and there is no input. :D

Add MJPEG support to the v4l2 access (and simplify the buffer size handling code). I now need people with v4l2 compatible devices with JPEG, DV and MPEG support to try to enable those features.

Don't call input_ChangeState() constantly while being in error state, because it triggers callbacks at each call. This can result in a busy rc interface.

Qt4 - MediaInformation, simplification of the states machine, removal of over-complicated methods. Cleaning and other small fixes.
Please report regressions on that part.