Copy wxPerl notes from the LaTeX documentation.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62451 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/image.h

@@ -457,6 +457,10 @@ public:
 
         @param xpmData
             A pointer to XPM image data.
+
+        @beginWxPerlOnly
+        Not supported by wxPerl.
+        @endWxPerlOnly
     */
     wxImage(const char* const* xpmData);