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/libcommands.tex b/Doc/lib/libcommands.tex
index e829077..e65e954 100644
--- a/Doc/lib/libcommands.tex
+++ b/Doc/lib/libcommands.tex
@@ -11,7 +11,7 @@
 
 The \code{commands} module defines the following functions:
 
-\renewcommand{\indexsubitem}{(in module commands)}
+\setindexsubitem{(in module commands)}
 \begin{funcdesc}{getstatusoutput}{cmd}
 Execute the string \var{cmd} in a shell with \code{os.popen()} and return
 a 2-tuple (status, output).  \var{cmd} is actually run as