fix(libs): restore ElvUI-namespaced Ace3 stack clobbered by sweep

The coa-ace3 sweep (commits 0c130e0..5ea6e44, before coa-elvui was added to
EXCLUDED_FORKS in coa-ace3 tools/sweep.py) overwrote ElvUI's customized,
-ElvUI-namespaced Ace3 libs with plain canonical ones. ElvUI registers libs
as AceLocale-3.0-ElvUI and the AceConfig-3.0-ElvUI family (plus -ElvUI
widgets that don't exist in canonical), so the clobber left them
unregistered: ElvUI failed to init (16 locale 'L' errors) and /ec would not
open. Restores ElvUI/Libraries/Ace3/AceLocale-3.0 and the
ElvUI_OptionsUI/Libraries/Ace3 stack to their pre-sweep state (5021fd1).
coa-elvui is now in EXCLUDED_FORKS, so this won't be re-clobbered.

ElvUI_OptionsUI/Libraries/Ace3/AceGUI-3.0/widgets/AceGUIWidget-DropDown.lua

@@ -4,13 +4,17 @@ local AceGUI = LibStub("AceGUI-3.0")
 -- Lua APIs
 local min, max, floor = math.min, math.max, math.floor
 local select, pairs, ipairs, type, tostring = select, pairs, ipairs, type, tostring
-local tsort = table.sort
+local tsort, tonumber = table.sort, tonumber
 
 -- WoW APIs
 local PlaySound = PlaySound
 local UIParent, CreateFrame = UIParent, CreateFrame
 local _G = _G
 
+-- Global vars/functions that we don't upvalue since they might get hooked, or upgraded
+-- List them here for Mikk's FindGlobals script
+-- GLOBALS: CLOSE
+
 local function fixlevels(parent,...)
 	local i = 1
 	local child = select(i, ...)
@@ -35,7 +39,7 @@ end
 
 do
 	local widgetType = "Dropdown-Pullout"
-	local widgetVersion = 5
+	local widgetVersion = 3
 
 	--[[ Static data ]]--
 
@@ -189,7 +193,12 @@ do
 
 		local height = 8
 		for i, item in pairs(items) do
-			item:SetPoint("TOP", itemFrame, "TOP", 0, -2 + (i - 1) * -16)
+			if i == 1 then
+				item:SetPoint("TOP", itemFrame, "TOP", 0, -2)
+			else
+				item:SetPoint("TOP", items[i-1].frame, "BOTTOM", 0, 1)
+			end
+
 			item:Show()
 
 			height = height + 16
@@ -249,7 +258,7 @@ do
 
 	local function Constructor()
 		local count = AceGUI:GetNextWidgetNum(widgetType)
-		local frame = CreateFrame("Frame", "AceGUI30Pullout"..count, UIParent, "BackdropTemplate")
+		local frame = CreateFrame("Frame", "AceGUI30Pullout"..count, UIParent)
 		local self = {}
 		self.count = count
 		self.type = widgetType
@@ -300,7 +309,7 @@ do
 		scrollFrame.obj = self
 		itemFrame.obj = self
 
-		local slider = CreateFrame("Slider", "AceGUI30PulloutScrollbar"..count, scrollFrame, "BackdropTemplate")
+		local slider = CreateFrame("Slider", "AceGUI30PulloutScrollbar"..count, scrollFrame)
 		slider:SetOrientation("VERTICAL")
 		slider:SetHitRectInsets(0, 0, -10, 0)
 		slider:SetBackdrop(sliderBackdrop)
@@ -347,7 +356,7 @@ end
 
 do
 	local widgetType = "Dropdown"
-	local widgetVersion = 36
+	local widgetVersion = 35
 
 	--[[ Static data ]]--
 
@@ -372,6 +381,7 @@ do
 
 	local function Dropdown_TogglePullout(this)
 		local self = this.obj
+		PlaySound("igMainMenuOptionCheckBoxOn") -- missleading name, but the Blizzard code uses this sound
 		if self.open then
 			self.open = nil
 			self.pullout:Close()
@@ -589,21 +599,47 @@ do
 			return tostring(x) < tostring(y)
 		end
 	end
-	local function SetList(self, list, order, itemType)
+
+	-- these were added by ElvUI
+	local sortStr1, sortStr2 = "%((%d+)%)", "%[(%d+)]"
+	local sortValue = function(a,b)
+		if a and b and (a[2] and b[2]) then
+			local a2 = tonumber(a[2]:match(sortStr1) or a[2]:match(sortStr2))
+			local b2 = tonumber(b[2]:match(sortStr1) or b[2]:match(sortStr2))
+			if a2 and b2 and (a2 ~= b2) then
+				return a2 < b2 -- try to sort by the number inside of brackets if we can
+			end
+			return a[2] < b[2]
+		end
+	end
+
+	local function SetList(self, list, order, itemType, sortByValue)
 		self.list = list or {}
 		self.pullout:Clear()
 		self.hasClose = nil
 		if not list then return end
 
 		if type(order) ~= "table" then
-			for v in pairs(list) do
-				sortlist[#sortlist + 1] = v
-			end
-			tsort(sortlist, sortTbl)
+			if sortByValue then -- added by ElvUI
+				for k, v in pairs(list) do
+					sortlist[#sortlist + 1] = {k,v}
+				end
+				tsort(sortlist, sortValue)
 
-			for i, key in ipairs(sortlist) do
-				AddListItem(self, key, list[key], itemType)
-				sortlist[i] = nil
+				for i, sortedList in ipairs(sortlist) do
+					AddListItem(self, sortedList[1], sortedList[2], itemType)
+					sortlist[i] = nil
+				end
+			else -- this is the default way (unchanged by ElvUI)
+				for v in pairs(list) do
+					sortlist[#sortlist + 1] = v
+				end
+				tsort(sortlist, sortTbl)
+
+				for i, key in ipairs(sortlist) do
+					AddListItem(self, key, list[key], itemType)
+					sortlist[i] = nil
+				end
 			end
 		else
 			for i, key in ipairs(order) do