[clutter-gst] types: add missing Since declarations

[Lionel Landwerlin <llandwerlin src gnome org>]

commit 91ae8d8bb6bf3fc9efca13c9ff6f1a19d69288e1
Author: Lionel Landwerlin <llandwerlin gmail com>
Date:   Mon Jun 9 22:51:08 2014 +0100

    types: add missing Since declarations

 clutter-gst/clutter-gst-types.h |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/clutter-gst/clutter-gst-types.h b/clutter-gst/clutter-gst-types.h
index b8c7c3e..337ba09 100644
--- a/clutter-gst/clutter-gst-types.h
+++ b/clutter-gst/clutter-gst-types.h
@@ -84,6 +84,8 @@ typedef enum _ClutterGstBufferingMode
  *
  * Bounding box of an area in a video texture or actor's allocation.
  * Coordinates are usually expressed in the [0, 1] interval.
+ *
+ * Since: 3.0
  */
 struct _ClutterGstBox
 {
@@ -100,6 +102,8 @@ struct _ClutterGstBox
  * @height: the height, in pixels
  *
  * A video resolution.
+ *
+ * Since: 3.0
  */
 struct _ClutterGstVideoResolution
 {
@@ -116,6 +120,8 @@ struct _ClutterGstVideoResolution
  * @pipeline: a #CoglPipeline to paint a frame
  *
  * Represents a frame outputted by the #ClutterGstVideoSink.
+ *
+ * Since: 3.0
  */
 struct _ClutterGstFrame
 {
@@ -130,6 +136,8 @@ struct _ClutterGstFrame
  * @pipeline: a #CoglPipeline to paint an overlay
  *
  * Represents a video overlay outputted by the #ClutterGstVideoSink.
+ *
+ * Since: 3.0
  */
 struct _ClutterGstOverlay
 {
@@ -140,6 +148,8 @@ struct _ClutterGstOverlay
 /**
  * ClutterGstOverlays:
  * @overlays: an array of #ClutterGstOverlay
+ *
+ * Since: 3.0
  */
 struct _ClutterGstOverlays
 {