libvisual: Rename get_type() function to prevent conflicts with static linking

https://bugzilla.gnome.org/show_bug.cgi?id=728443

ext/libvisual/gstaudiovisualizer.c

@@ -503,7 +503,7 @@ struct _GstAudioVisualizerPrivate
 };
 
 GType
-gst_audio_visualizer_get_type (void)
+libvisual_gst_audio_visualizer_get_type (void)
 {
   static volatile gsize audio_visualizer_type = 0;
 

ext/libvisual/gstaudiovisualizer.h

@@ -29,7 +29,7 @@
 #include <gst/base/gstadapter.h>
 
 G_BEGIN_DECLS
-#define GST_TYPE_AUDIO_VISUALIZER            (gst_audio_visualizer_get_type())
+#define GST_TYPE_AUDIO_VISUALIZER            (libvisual_gst_audio_visualizer_get_type())
 #define GST_AUDIO_VISUALIZER(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_VISUALIZER,GstAudioVisualizer))
 #define GST_AUDIO_VISUALIZER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_VISUALIZER,GstAudioVisualizerClass))
 #define GST_AUDIO_VISUALIZER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_AUDIO_VISUALIZER,GstAudioVisualizerClass))
@@ -121,7 +121,7 @@ struct _GstAudioVisualizerClass
   gboolean (*decide_allocation)   (GstAudioVisualizer * scope, GstQuery *query);
 };
 
-GType gst_audio_visualizer_get_type (void);
+GType libvisual_gst_audio_visualizer_get_type (void);
 
 G_END_DECLS
 #endif /* __GST_AUDIO_VISUALIZER_H__ */