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/libpanel.tex b/Doc/lib/libpanel.tex
index c546412..efcfd0e 100644
--- a/Doc/lib/libpanel.tex
+++ b/Doc/lib/libpanel.tex
@@ -15,7 +15,7 @@
 The module is too large to document here in its entirety.
 One interesting function:
 
-\renewcommand{\indexsubitem}{(in module panel)}
+\setindexsubitem{(in module panel)}
 \begin{funcdesc}{defpanellist}{filename}
 Parses a panel description file containing S-expressions written by the
 \emph{Panel Editor}