Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Close #1459

This hides all stream features from the Stream/Save dialog (Sout)
This resolves a little bug too: the dialog did not refresh correctly when switching between stream and save.

Switch to active button color before making the actual activation. This gives us a small chance to actually SEE the button be activated before the menu continues.

http://forum.videolan.org/viewtopic.php?f=14&t=49386

I won't say the code is bad, we are way beyond that.

It is some sort of workaround for some DVD menu.

includes last-minute string additions to the OSX and Qt4 interfaces

Now that swscale can handle RGB chroma's, let's try to use is where we can, it is likely a lot faster.

As live555 provides only static lib and we build a plugin, we need to use p$
This partially revert [7b0dd84f]

I have tested that RGBA blending to I420/YUY2/RV32/RV16 have the right colors.