* regtool.cc (longopts): Add --wow32 option.

(opts): Add -W option.
	(usage): Add text for --wow32/-W option.
	(main): Handle --wow32/-W option.
	* utils.sgml: Document the new -W option.

winsup/utils/utils.sgml

@@ -1061,6 +1061,7 @@ Other Options:
  -q, --quiet    no error output, just nonzero return if KEY/VALUE missing
  -v, --verbose  verbose output, including VALUE contents when applicable
  -w, --wow64    access 64 bit registry view (ignored on 32 bit Windows)
+ -W, --wow32    access 32 bit registry view (ignored on 32 bit Windows)
  -V, --version  output version information and exit
 
 KEY is in the format [host]\prefix\KEY\KEY\VALUE, where host is optional
@@ -1096,6 +1097,11 @@ the <literal>-w</literal> the 64 bit view is used and
 This option is simply ignored when running on 32 bit Windows versions.
 </para>
 
+<para>The <literal>-W</literal> option allows to access the 32 bit view
+on the registry.  The purpose of this  option is mainly symmetry.  It
+allows to create OS agnostic scripts which would also work in a hypothetic
+64 bit version of Cygwin.</para>
+
 <para>You must provide <command>regtool</command> with an 
 <emphasis>action</emphasis> following options (if any). Currently,
 the action must be <literal>add</literal>, <literal>set</literal>,