Rename plugin filesnames to match plugin names

- libgstgtksink.so -> libgstgtk.so
- libgstteletextdec.so -> libgstteletex.so
- libgstcamerabin2.so -> libgstcamerabin.so
- libgstonvif.so -> libgstrtponvif.so (meson only)
- sdp -> sdpelem (avoid clash with libgstsdp)
- gstsiren -> siren
- libgstkmssink.so -> libgstkms.so

https://bugzilla.gnome.org/show_bug.cgi?id=779344

ext/gtk/Makefile.am

@@ -21,29 +21,29 @@ sources = \
 	gstplugin.c \
 	$(NULL)
 
-libgstgtksink_la_CFLAGS = \
+libgstgtk_la_CFLAGS = \
 	-I$(top_srcdir)/gst-libs \
 	-I$(top_builddir)/gst-libs \
 	$(GTK3_CFLAGS) \
 	$(GST_CFLAGS) \
 	$(GST_BASE_CFLAGS) \
 	$(GST_PLUGINS_BASE_CFLAGS)
-libgstgtksink_la_LIBADD = \
+libgstgtk_la_LIBADD = \
 	$(GTK3_LIBS) \
 	$(GST_BASE_LIBS) \
 	$(GST_PLUGINS_BASE_LIBS) \
 	-lgstvideo-$(GST_API_VERSION)
 
-libgstgtksink_la_SOURCES = $(sources)
-libgstgtksink_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
-libgstgtksink_la_LIBTOOLFLAGS = $(GST_PLUGIN_LIBTOOLFLAGS)
+libgstgtk_la_SOURCES = $(sources)
+libgstgtk_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
+libgstgtk_la_LIBTOOLFLAGS = $(GST_PLUGIN_LIBTOOLFLAGS)
 
 if USE_GTK3_GL
 if USE_GL
-libgstgtksink_la_SOURCES += gstgtkglsink.c gstgtkglsink.h gtkgstglwidget.c gtkgstglwidget.h
-libgstgtksink_la_LIBADD += \
+libgstgtk_la_SOURCES += gstgtkglsink.c gstgtkglsink.h gtkgstglwidget.c gtkgstglwidget.h
+libgstgtk_la_LIBADD += \
 	$(top_builddir)/gst-libs/gst/gl/libgstgl-$(GST_API_VERSION).la
 endif
 endif
 
-plugin_LTLIBRARIES = libgstgtksink.la
+plugin_LTLIBRARIES = libgstgtk.la

ext/gtk/gstplugin.c

@@ -46,7 +46,7 @@ plugin_init (GstPlugin * plugin)
 
 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
     GST_VERSION_MINOR,
-    gstgtk,
+    gtk,
     "Gtk+ sink",
     plugin_init, PACKAGE_VERSION, GST_LICENSE, GST_PACKAGE_NAME,
     GST_PACKAGE_ORIGIN)