Make the timeout longer to give slow machines a chance to pass the test

before timing out.  This doesn't change the duration of the test under
normal circumstances.  This is targetted at fixing the spurious failures
on the FreeBSD buildbot primarily.

Lib/test/test_smtplib.py

@@ -19,7 +19,7 @@ PORT = None
 
 def server(evt, buf):
     serv = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-    serv.settimeout(1)
+    serv.settimeout(15)
     serv.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
     serv.bind(("", 0))
     global PORT