Update cursor docs

Include new images for context-menu and for no-drop.

docs/reference/gdk/Makefile.am

@@ -162,6 +162,7 @@ HTML_IMAGES = 				\
 	images/grabbing_cursor.png	\
 	images/grab_cursor.png		\
 	images/hand_cursor.png		\
+	images/context_menu_cursor.png	\
 	images/help_cursor.png		\
 	images/move_cursor.png		\
 	images/ne_resize_cursor.png	\

gdk/gdkcursor.c

@@ -253,7 +253,7 @@ gdk_cursor_new_for_display (GdkDisplay    *display,
  * - ![](default_cursor.png) "default"
  * - ![](help_cursor.png) "help"
  * - ![](pointer_cursor.png) "pointer"
- * - ![](pointer_cursor.png) "context-menu"
+ * - ![](context_menu_cursor.png) "context-menu"
  * - ![](progress_cursor.png) "progress"
  * - ![](wait_cursor.png) "wait"
  * - ![](cell_cursor.png) "cell"
@@ -262,8 +262,8 @@ gdk_cursor_new_for_display (GdkDisplay    *display,
  * - ![](vertical_text_cursor.png) "vertical-text"
  * - ![](alias_cursor.png) "alias"
  * - ![](copy_cursor.png) "copy"
- * - ![](move_cursor.png) "move"
  * - ![](no_drop_cursor.png) "no-drop"
+ * - ![](move_cursor.png) "move"
  * - ![](not_allowed_cursor.png) "not-allowed"
  * - ![](grab_cursor.png) "grab"
  * - ![](grabbing_cursor.png) "grabbing"