Added more "See also" entries, + 1 inline hyperlink.

Doc/lib/libanydbm.tex

@@ -87,3 +87,10 @@ only when the database has to be created.  It defaults to octal
 \begin{excdesc}{error}
 Raised for errors not reported as \exception{KeyError} errors.
 \end{excdesc}
+
+
+\begin{seealso}
+  \seemodule{anydbm}{Generic interface to \code{dbm}-style databases.}
+  \seemodule{whichdb}{Utility module used to determine the type of an
+                      existing database.}
+\end{seealso}