Remove obsolete \setindexsubitem macro,

Added index entries.

Markup nits.
diff --git a/Doc/lib/libuu.tex b/Doc/lib/libuu.tex
index e953628..82621b9 100644
--- a/Doc/lib/libuu.tex
+++ b/Doc/lib/libuu.tex
@@ -14,12 +14,12 @@
 
 This code was contributed by Lance Ellinghouse, and modified by Jack
 Jansen.
+\index{Jansen, Jack}
+\index{Ellinghouse, Lance}
 
 The \module{uu} module defines the following functions:
 
-\setindexsubitem{(in module uu)}
-
-\begin{funcdesc}{encode}{in_file, out_file\optional{, name, mode}}
+\begin{funcdesc}{encode}{in_file, out_file\optional{, name\optional{, mode}}}
 Uuencode file \var{in_file} into file \var{out_file}.  The uuencoded
 file will have the header specifying \var{name} and \var{mode} as the
 defaults for the results of decoding the file. The default defaults
@@ -27,7 +27,7 @@
 respectively. 
 \end{funcdesc}
 
-\begin{funcdesc}{decode}{in_file\optional{, out_file, mode}}
+\begin{funcdesc}{decode}{in_file\optional{, out_file\optional{, mode}}}
 This call decodes uuencoded file \var{in_file} placing the result on
 file \var{out_file}. If \var{out_file} is a pathname the \var{mode} is
 also set. Defaults for \var{out_file} and \var{mode} are taken from
diff --git a/Doc/libuu.tex b/Doc/libuu.tex
index e953628..82621b9 100644
--- a/Doc/libuu.tex
+++ b/Doc/libuu.tex
@@ -14,12 +14,12 @@
 
 This code was contributed by Lance Ellinghouse, and modified by Jack
 Jansen.
+\index{Jansen, Jack}
+\index{Ellinghouse, Lance}
 
 The \module{uu} module defines the following functions:
 
-\setindexsubitem{(in module uu)}
-
-\begin{funcdesc}{encode}{in_file, out_file\optional{, name, mode}}
+\begin{funcdesc}{encode}{in_file, out_file\optional{, name\optional{, mode}}}
 Uuencode file \var{in_file} into file \var{out_file}.  The uuencoded
 file will have the header specifying \var{name} and \var{mode} as the
 defaults for the results of decoding the file. The default defaults
@@ -27,7 +27,7 @@
 respectively. 
 \end{funcdesc}
 
-\begin{funcdesc}{decode}{in_file\optional{, out_file, mode}}
+\begin{funcdesc}{decode}{in_file\optional{, out_file\optional{, mode}}}
 This call decodes uuencoded file \var{in_file} placing the result on
 file \var{out_file}. If \var{out_file} is a pathname the \var{mode} is
 also set. Defaults for \var{out_file} and \var{mode} are taken from