restored python test drivers

[SVN r19976]

example/test_getting_started1.py

@@ -0,0 +1,18 @@
+r'''>>> import getting_started1
+    >>> print getting_started1.greet()
+    hello, world
+    >>> number = 11
+    >>> print number, '*', number, '=', getting_started1.square(number)
+    11 * 11 = 121
+'''
+
+def run(args = None):
+    if args is not None:
+        import sys
+        sys.argv = args
+    import doctest, test_getting_started1
+    return doctest.testmod(test_getting_started1)
+
+if __name__ == '__main__':
+    import sys
+    sys.exit(run()[0])