Remove all \bcode / \ecode cruft; this is no longer needed.  See previous
checkin of myformat.sty.

Change "\renewcommand{\indexsubitem}{(...)}" to "\setindexsubitem{(...)}"
everywhere.

Some other minor nits that I happened to come across.
diff --git a/Doc/lib/liburllib.tex b/Doc/lib/liburllib.tex
index 5f8297d..8e7decf 100644
--- a/Doc/lib/liburllib.tex
+++ b/Doc/lib/liburllib.tex
@@ -5,7 +5,7 @@
 \index{World-Wide Web}
 \index{URL}
 
-\renewcommand{\indexsubitem}{(in module urllib)}
+\setindexsubitem{(in module urllib)}
 
 This module provides a high-level interface for fetching data across
 the World-Wide Web.  In particular, the \code{urlopen()} function is