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.)

Lib/netrc.py

@@ -108,4 +108,4 @@ class netrc:
         return rep
 
 if __name__ == '__main__':
-    print netrc()
+    print(netrc())