Various annotation fixes

https://bugzilla.gnome.org/show_bug.cgi?id=660854

src/compositor/meta-shaped-texture.c

@@ -772,7 +772,7 @@ meta_shaped_texture_set_overlay_path (MetaShapedTexture *stex,
 
 /**
  * meta_shaped_texture_set_clip_region:
- * @frame: a #TidyTextureframe
+ * @frame: a #MetaShapedTexture
  * @clip_region: (transfer full): the region of the texture that
  *   is visible and should be painted. OWNERSHIP IS ASSUMED BY
  *   THE FUNCTION (for efficiency to avoid a copy.)

src/compositor/meta-texture-tower.c

@@ -111,8 +111,8 @@ texture_is_rectangle (CoglHandle texture)
 #endif /* GL_TEXTURE_RECTANGLE_ARB */
 
 /**
- * meta_texture_tower_update_area:
- * @tower: a MetaTextureTower
+ * meta_texture_tower_set_base_texture:
+ * @tower: a #MetaTextureTower
  * @texture: the new texture used as a base for scaled down versions
  *
  * Sets the base texture that is the scaled texture that the
@@ -175,7 +175,7 @@ meta_texture_tower_set_base_texture (MetaTextureTower *tower,
 
 /**
  * meta_texture_tower_update_area:
- * @tower: a MetaTextureTower
+ * @tower: a #MetaTextureTower
  * @x: X coordinate of upper left of rectangle that changed
  * @y: Y coordinate of upper left of rectangle that changed
  * @width: width of rectangle that changed
@@ -579,7 +579,7 @@ texture_tower_revalidate (MetaTextureTower *tower,
 
 /**
  * meta_texture_tower_get_paint_texture:
- * @tower: a MetaTextureTower
+ * @tower: a #MetaTextureTower
  *
  * Gets the texture from the tower that best matches the current
  * rendering scale. (On the assumption here the texture is going to

src/core/screen.c

@@ -3490,6 +3490,14 @@ meta_screen_get_xroot (MetaScreen *screen)
   return screen->xroot;
 }
 
+/**
+ * meta_screen_get_size:
+ * @screen: A #MetaScreen
+ * @width: (out): The width of the screen
+ * @height: (out): The height of the screen
+ *
+ * Retrieve the size of the screen.
+ */
 void 
 meta_screen_get_size (MetaScreen *screen,
                       int        *width,