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/uu.py b/Lib/uu.py
index 887d99a..4d3cbd6 100755
--- a/Lib/uu.py
+++ b/Lib/uu.py
@@ -170,7 +170,7 @@
             if isinstance(output, basestring):
                 output = open(output, 'w')
             else:
-                print sys.argv[0], ': cannot do -t to stdout'
+                print(sys.argv[0], ': cannot do -t to stdout')
                 sys.exit(1)
         decode(input, output)
     else:
@@ -178,7 +178,7 @@
             if isinstance(input, basestring):
                 input = open(input, 'r')
             else:
-                print sys.argv[0], ': cannot do -t from stdin'
+                print(sys.argv[0], ': cannot do -t from stdin')
                 sys.exit(1)
         encode(input, output)