added wxXmlResource::LoadFile() to avoid URL-vs-filename ambiguity in Load()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@59150 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/xrc/xmlres.h

@@ -109,9 +109,12 @@ public:
     virtual ~wxXmlResource();
 
     // Loads resources from XML files that match given filemask.
-    // This method understands VFS (see filesys.h).
+    // This method understands wxFileSystem URLs if wxUSE_FILESYS.
     bool Load(const wxString& filemask);
 
+    // Loads resources from single XRC file.
+    bool LoadFile(const wxFileName& file);
+
     // Unload resource from the given XML file (wildcards not allowed)
     bool Unload(const wxString& filename);