Merge VirtualTree component to r221. Minor changes in it, e.g. removed Delphi 7 support, and nicer sort glyphs on Aero theming.

components/virtualtreeview/Source/VTAccessibility.pas

@@ -157,7 +157,6 @@ function TVirtualTreeAccessibility.accLocation(out pxLeft: Integer;
 // returns the location of the VirtualStringTree object.
 var
   P: TPoint;
-  DisplayRect : TRect;
 begin
   Result := S_FALSE;
   if varChild = CHILDID_SELF then

components/virtualtreeview/Source/VTConfig.inc

@@ -11,15 +11,6 @@
 {.$define UseFlatScrollbars}
 {.$define ReverseFullExpandHotKey} // Used to define Ctrl+'+' instead of Ctrl+Shift+'+' for full expand (and similar for collapsing).
 
-// Enable this switch for Windows XP theme support. If you compile with Delphi 6 or lower you must download and install
-// the Soft Gems Theme Manager package.
-{$define ThemeSupport}
-
-// Virtual Treeview can use a tiny but very effective local memory manager for node allocation.
-// The local memory manager was implemented by David Clark from Caelo Software Inc.
-// See below for more info about it.
-{.$define UseLocalMemoryManager}
-
 {$define TntSupport} // Added by Igor Afanasyev to support unicode-aware inplace editors. This implementation uses
                      // Troy Wolbrink's TNT controls, which can be found at:
                      // http://home.ccci.org/wolbrink/tnt/delphi_unicode_controls.htm.