Add support for loading wxIconBundle from MS Windows resource

interface/wx/iconbndl.h

@@ -68,6 +68,18 @@ public:
     */
     wxIconBundle(const wxIcon& icon);
 
+    /**
+    Initializes the bundle with all sizes of a group icon with @a resourceName
+    stored as an MS Windows resource in @a module. When @a module is 0, the current
+    instance is used.
+    
+    @see AddIcon(const wxString&, WXHINSTANCE)
+    
+    @onlyfor{wxmsw}
+    @since 3.1.1
+    */
+    wxIconBundle(const wxString& resourceName, WXHINSTANCE module);
+
     /**
         Copy constructor.
     */
@@ -98,6 +110,15 @@ public:
     */
     void AddIcon(wxInputStream& stream, wxBitmapType type = wxBITMAP_TYPE_ANY);
 
+    /**
+    Loads all sizes of a group icon with @a resourceName stored as an MS Windows 
+    resource in @a module. When @a module is 0, the current instance is used.
+    
+    @onlyfor{wxmsw}
+    @since 3.1.1
+    */
+    void AddIcon(const wxString& resourceName, WXHINSTANCE module);
+
     /**
         Adds the icon to the collection; if the collection already
         contains an icon with the same width and height, it is