Fix UIDropDownMenu taint (WIP)

Taint issues on most windows seem to be fixed. Import window still taints. Some dropdown menu borders are missing.

Libs/LibUIDropDownMenu/LibEasyMenu.lua

@@ -0,0 +1,44 @@
+--$Id: LibEasyMenu.lua 64 2020-11-18 13:13:15Z arithmandar $
+-- //////////////////////////////////////////////////////////////
+-- Notes: 
+--      Functions have been moved to under LibUIDropDownMenu.lua
+--      New function calls are as below:
+--
+--      - lib:EasyMenu(menuList, menuFrame, anchor, x, y, displayMode, autoHideDelay )
+--      - lib:EasyMenu_Initialize( frame, level, menuList )
+--
+-- //////////////////////////////////////////////////////////////
+-- Simplified Menu Display System
+--	This is a basic system for displaying a menu from a structure table.
+--
+--	See UIDropDownMenu.lua for the menuList details.
+--
+--	Args:
+--		menuList - menu table
+--		menuFrame - the UI frame to populate
+--		anchor - where to anchor the frame (e.g. CURSOR)
+--		x - x offset
+--		y - y offset
+--		displayMode - border type
+--		autoHideDelay - how long until the menu disappears
+--
+--
+--[[
+function EasyMenu(menuList, menuFrame, anchor, x, y, displayMode, autoHideDelay )
+	if ( displayMode == "MENU" ) then
+		menuFrame.displayMode = displayMode;
+	end
+	UIDropDownMenu_Initialize(menuFrame, EasyMenu_Initialize, displayMode, nil, menuList);
+	ToggleDropDownMenu(1, nil, menuFrame, anchor, x, y, menuList, nil, autoHideDelay);
+end
+
+function EasyMenu_Initialize( frame, level, menuList )
+	for index = 1, #menuList do
+		local value = menuList[index]
+		if (value.text) then
+			value.index = index;
+			UIDropDownMenu_AddButton( value, level );
+		end
+	end
+end
+]]