Take into account wxAnimationCtrl "animation" property in wxrc.

The files used as the values of this property need to be included in the
generated file too.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@77004 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -637,6 +637,7 @@ All (GUI):
 - Fix handling of custom colours in wxPropertyGrid choices (Artur Wieczorek).
 - Add "hint" property to wxTextCtrl XRC handler.
 - Allow using wxALIGN_CENTER, and not just CENTRE, in XRC for wxStaticText.
+- Handle files used in wxAnimationCtrl "animation" property in wxrc.
 
 wxGTK:
 

utils/wxrc/wxrc.cpp

@@ -495,6 +495,10 @@ static bool NodeContainsFilename(wxXmlNode *node)
            return true;
    }
 
+   // wxAnimationCtrl animations:
+   if ( name == wxS("animation") )
+       return true;
+
    // URLs in wxHtmlWindow:
    if ( name == wxT("url") &&
         parent != NULL &&