SF bug 735293: Command line timeit.py sets sys.path badly

Paul Moore's patch to have timeit.py check the current directory for
imports (instead of the directory for Lib/timeit.py).
diff --git a/Lib/timeit.py b/Lib/timeit.py
index 9870954..4ad4a39 100644
--- a/Lib/timeit.py
+++ b/Lib/timeit.py
@@ -236,6 +236,11 @@
             print __doc__,
             return 0
     setup = "\n".join(setup) or "pass"
+    # Include the current directory, so that local imports work (sys.path
+    # contains the directory of this script, rather than the current
+    # directory)
+    import os
+    sys.path.insert(0, os.curdir)
     t = Timer(stmt, setup, timer)
     if number == 0:
         # determine number so that 0.2 <= total time < 2.0