Link to LibRef module documentation

Doc/whatsnew/whatsnew25.tex

@@ -1842,6 +1842,9 @@ of extension modules, now that \module{ctypes} is included with core Python.
 \seeurl{http://starship.python.net/crew/theller/ctypes/}
 {The ctypes web page, with a tutorial, reference, and FAQ.}
 
+\seeurl{../lib/module-ctypes.html}{The documentation 
+for the \module{ctypes} module.}
+
 \end{seealso}
 
 
@@ -1953,7 +1956,6 @@ Please read the package's official documentation for more details.
 \seeurl{http://effbot.org/zone/element-index.htm}
 {Official documentation for ElementTree.}
 
-
 \end{seealso}
 
 
@@ -2004,6 +2006,13 @@ current digest state, \method{digest()} and \method{hexdigest()}
 return the digest value as a binary string or a string of hex digits,
 and \method{copy()} returns a new hashing object with the same digest state.
 
+\begin{seealso}
+
+\seeurl{../lib/module-hashlib.html}{The documentation 
+for the \module{hashlib} module.}
+
+\end{seealso}
+
 
 %======================================================================
 \subsection{The sqlite3 package\label{module-sqlite}}
@@ -2114,6 +2123,9 @@ For more information about the SQL dialect supported by SQLite, see
 {The SQLite web page; the documentation describes the syntax and the
 available data types for the supported SQL dialect.}
 
+\seeurl{../lib/module-sqlite3.html}{The documentation 
+for the \module{sqlite3} module.}
+
 \seepep{249}{Database API Specification 2.0}{PEP written by
 Marc-Andr\'e Lemburg.}