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/robotparser.py

@@ -16,7 +16,7 @@ __all__ = ["RobotFileParser"]
 debug = 0
 
 def _debug(msg):
-    if debug: print msg
+    if debug: print(msg)
 
 
 class RobotFileParser:
@@ -244,10 +244,10 @@ def _check(a,b):
     else:
         ac = "access allowed"
     if a!=b:
-        print "failed"
+        print("failed")
     else:
-        print "ok (%s)" % ac
-    print
+        print("ok (%s)" % ac)
+    print()
 
 def _test():
     global debug