Added widget methods {Height,Width}{,MM}OfScreen.
diff --git a/Python/thread.c b/Python/thread.c
index 56ef137..f2e7ae9 100644
--- a/Python/thread.c
+++ b/Python/thread.c
@@ -43,7 +43,7 @@
#define HDR_SIZE 2680 /* sizeof(ushdr_t) */
#define MAXPROC 100 /* max # of threads that can be started */
-static usptr_t *shared_arena;
+/*static*/ usptr_t *shared_arena;
static ulock_t count_lock; /* protection for some variables */
static ulock_t wait_lock; /* lock used to wait for other threads */
static int waiting_for_threads; /* protected by count_lock */