Fix most trivially-findable print statements.

There's one major and one minor category still unfixed:
doctests are the major category (and I hope to be able to augment the
refactoring tool to refactor bona fide doctests soon);
other code generating print statements in strings is the minor category.

(Oh, and I don't know if the compiler package works.)
diff --git a/Lib/whichdb.py b/Lib/whichdb.py
index f077f87..4d7a560 100644
--- a/Lib/whichdb.py
+++ b/Lib/whichdb.py
@@ -114,4 +114,4 @@
 
 if __name__ == "__main__":
     for filename in sys.argv[1:]:
-        print whichdb(filename) or "UNKNOWN", filename
+        print(whichdb(filename) or "UNKNOWN", filename)