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/libpwd.tex b/Doc/lib/libpwd.tex
index 82ebd61..8e1fd2b 100644
--- a/Doc/lib/libpwd.tex
+++ b/Doc/lib/libpwd.tex
@@ -19,7 +19,7 @@
 
 It defines the following items:
 
-\renewcommand{\indexsubitem}{(in module pwd)}
+\setindexsubitem{(in module pwd)}
 \begin{funcdesc}{getpwuid}{uid}
 Return the password database entry for the given numeric user ID.
 \end{funcdesc}