Bug fixes and new implementations

- Video format MJPEG implemented (libjpeg/qimage)
- Inactive priorities are now skipped correctly (PriorityMuxer.cpp line 297)
- v4l configuration section replaced with an object (preparation for #542)

libsrc/utils/ImageResampler.cpp

@@ -121,6 +121,10 @@ void ImageResampler::processImage(const uint8_t * data, int width, int height, i
 					rgb.red   = data[index+2];
 				}
 				break;
+#ifdef HAVE_JPEG
+				case PIXELFORMAT_MJPEG:
+					break;
+#endif
 				case PIXELFORMAT_NO_CHANGE:
 					Error(Logger::getInstance("ImageResampler"), "Invalid pixel format given");
 				break;