Send WM_TAKE_FOCUS when setting focus (fixes java problems)

include/util.h

@@ -126,6 +126,12 @@ char *convert_utf8_to_ucs2(char *input, int *real_strlen);
 Client *get_last_focused_client(xcb_connection_t *conn, Container *container,
                                 Client *exclude);
 
+/**
+ * Sends WM_TAKE_FOCUS to the client
+ *
+ */
+void take_focus(xcb_connection_t *conn, Client *client);
+
 /**
  * Sets the given client as focused by updating the data structures correctly,
  * updating the X input focus and finally re-decorating both windows (to