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/BaseHTTPServer.py b/Lib/BaseHTTPServer.py
index ae916b6..982c9d2 100644
--- a/Lib/BaseHTTPServer.py
+++ b/Lib/BaseHTTPServer.py
@@ -570,7 +570,7 @@
     httpd = ServerClass(server_address, HandlerClass)
 
     sa = httpd.socket.getsockname()
-    print "Serving HTTP on", sa[0], "port", sa[1], "..."
+    print("Serving HTTP on", sa[0], "port", sa[1], "...")
     httpd.serve_forever()