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/idlelib/Percolator.py

@@ -58,10 +58,10 @@ def main():
             self.name = name
             Delegator.__init__(self, None)
         def insert(self, *args):
-            print self.name, ": insert", args
+            print(self.name, ": insert", args)
             self.delegate.insert(*args)
         def delete(self, *args):
-            print self.name, ": delete", args
+            print(self.name, ": delete", args)
             self.delegate.delete(*args)
     root = Tk()
     root.wm_protocol("WM_DELETE_WINDOW", root.quit)