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/test/test_errno.py b/Lib/test/test_errno.py
index 6b02e25..25937dc 100755
--- a/Lib/test/test_errno.py
+++ b/Lib/test/test_errno.py
@@ -43,7 +43,7 @@
         a = getattr(errno, error)
     except AttributeError:
         if verbose:
-            print '%s: not found' % error
+            print('%s: not found' % error)
     else:
         if verbose:
-            print '%s: %d' % (error, a)
+            print('%s: %d' % (error, a))