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/libsun.tex b/Doc/lib/libsun.tex
index a579872..f6d9994 100644
--- a/Doc/lib/libsun.tex
+++ b/Doc/lib/libsun.tex
@@ -14,7 +14,7 @@
 
 The module defines the following variables and functions:
 
-\renewcommand{\indexsubitem}{(in module sunaudiodev)}
+\setindexsubitem{(in module sunaudiodev)}
 \begin{excdesc}{error}
 This exception is raised on all errors. The argument is a string
 describing what went wrong.
@@ -36,7 +36,7 @@
 following methods (except \code{control} objects which only provide
 getinfo, setinfo and drain):
 
-\renewcommand{\indexsubitem}{(audio device method)}
+\setindexsubitem{(audio device method)}
 
 \begin{funcdesc}{close}{}
 This method explicitly closes the device. It is useful in situations