revised a* interface headers; categorized many functions; moved some functions to their correct header

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@52499 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/accel.h

@@ -180,6 +180,11 @@ public:
     wxAcceleratorTable operator =(const wxAcceleratorTable& accel);
 };
 
+
+// ============================================================================
+// Global functions/macros
+// ============================================================================
+
 /**
     An empty accelerator table.
 */