Added "See also" sections linking to binascii.

Doc/lib/libbase64.tex

@@ -47,3 +47,9 @@ Encode the string \var{s}, which can contain arbitrary binary data,
 and return a string containing one or more lines of
 base64 encoded data.
 \end{funcdesc}
+
+
+\begin{seealso}
+  \seemodule{binascii}{support module containing \ASCII{}-to-binary
+                       and binary-to-\ASCII{} conversions}
+\end{seealso}

Doc/lib/libuu.tex

@@ -37,3 +37,9 @@ 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
 the uuencode header.
 \end{funcdesc}
+
+
+\begin{seealso}
+  \seemodule{binascii}{support module containing \ASCII{}-to-binary
+                       and binary-to-\ASCII{} conversions}
+\end{seealso}