This test (with ZEO) failed frequently on my Win98 box with a timeout

of 30 seconds.  There's nothing wrong with the code, it's just slow.
So increase the timeout to 60 seconds.

src/ZODB/tests/MTStorage.py

@@ -170,9 +170,9 @@ class MTStorage:
         for t in threads:
             t.start()
         for t in threads:
-            t.join(30)
+            t.join(60)
         for t in threads:
-            self.failIf(t.isAlive(), "thread failed to finish in 30 seconds")
+            self.failIf(t.isAlive(), "thread failed to finish in 60 seconds")
 
     def check2ZODBThreads(self):
         db = ZODB.DB(self._storage)