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/xml/dom/pulldom.py b/Lib/xml/dom/pulldom.py
index 18f49b5..f0245c4 100644
--- a/Lib/xml/dom/pulldom.py
+++ b/Lib/xml/dom/pulldom.py
@@ -201,7 +201,7 @@
 
 class ErrorHandler:
     def warning(self, exception):
-        print exception
+        print(exception)
     def error(self, exception):
         raise exception
     def fatalError(self, exception):