Store horizontal scroll position in listbox

This is not stored by default for compatibility to Igor Pro 5, see
the help on "hscroll" of Listbox.

Author: t-b

procedures/CodeBrowser_hooks.ipf

@@ -51,6 +51,11 @@ Function initializePanel()
 		debugPrint("Error: SetIgorOption returned " + num2str(V_flag))
 	endif
 
+	Execute/Z/Q "SetIgorOption recreateListboxHScroll=1"
+	if (!(V_flag == 0))
+		debugPrint("Error: SetIgorOption returned " + num2str(V_flag))
+	endif
+
 	SetIgorHook AfterCompiledHook=updatePanel
 	debugPrint("AfterCompiledHook: " + S_info)