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_zipfile64.py b/Lib/test/test_zipfile64.py
index 449cf39..445e23d 100644
--- a/Lib/test/test_zipfile64.py
+++ b/Lib/test/test_zipfile64.py
@@ -57,9 +57,9 @@
             # Print still working message since this test can be really slow
             if next_time <= time.time():
                 next_time = time.time() + _PRINT_WORKING_MSG_INTERVAL
-                print >>sys.__stdout__, (
+                print((
                    '  zipTest still writing %d of %d, be patient...' %
-                   (num, filecount))
+                   (num, filecount)), file=sys.__stdout__)
                 sys.__stdout__.flush()
         zipfp.close()
 
@@ -70,9 +70,9 @@
             # Print still working message since this test can be really slow
             if next_time <= time.time():
                 next_time = time.time() + _PRINT_WORKING_MSG_INTERVAL
-                print >>sys.__stdout__, (
+                print((
                    '  zipTest still reading %d of %d, be patient...' %
-                   (num, filecount))
+                   (num, filecount)), file=sys.__stdout__)
                 sys.__stdout__.flush()
         zipfp.close()