implement configure requests, adapt testcase

testcase does not pass 100% due to clients not being reparented correctly yet.

include/con.h

@@ -129,4 +129,12 @@ int con_orientation(Con *con);
  */
 Con *con_next_focused(Con *con);
 
+/*
+ * Returns a "relative" Rect which contains the amount of pixels that need to
+ * be added to the original Rect to get the final position (obviously the
+ * amount of pixels for normal, 1pixel and borderless are different).
+ *
+ */
+Rect con_border_style_rect(Con *con);
+
 #endif

include/handlers.h

@@ -79,6 +79,7 @@ int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_n
  */
 int handle_screen_change(void *prophs, xcb_connection_t *conn,
                          xcb_generic_event_t *e);
+#endif
 
 /**
  * Configure requests are received when the application wants to resize
@@ -90,7 +91,7 @@ int handle_screen_change(void *prophs, xcb_connection_t *conn,
  */
 int handle_configure_request(void *prophs, xcb_connection_t *conn,
                              xcb_configure_request_event_t *event);
-#endif
+
 /**
  * Our window decorations were unmapped. That means, the window will be killed
  * now, so we better clean up before.

include/util.h

@@ -37,6 +37,7 @@ while (0)
 int min(int a, int b);
 int max(int a, int b);
 bool rect_contains(Rect rect, uint32_t x, uint32_t y);
+Rect rect_add(Rect a, Rect b);
 
 /**
  * Updates *destination with new_value and returns true if it was changed or false