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/libpprint.tex b/Doc/lib/libpprint.tex
index 9e14d5f..caae69a 100644
--- a/Doc/lib/libpprint.tex
+++ b/Doc/lib/libpprint.tex
@@ -19,7 +19,7 @@
 
 The \code{pprint} module defines one class:
 
-\renewcommand{\indexsubitem}{(in module pprint)}
+\setindexsubitem{(in module pprint)}
 
 % First the implementation class:
 
@@ -140,7 +140,7 @@
 PrettyPrinter instances (returned by \code{PrettyPrinter()} above)
 have the following methods.
 
-\renewcommand{\indexsubitem}{(PrettyPrinter method)}
+\setindexsubitem{(PrettyPrinter method)}
 
 \begin{funcdesc}{pformat}{object}
 Return the formatted representation of \var{object}.  This takes into