Add CurrentAtEnd to Alt-Tab WindowList

  This makes the default-config alt-tab key binding work more as expected
  so a single press of alt-tab will move to the next window.

default-config/config

@@ -487,7 +487,7 @@ AddToMenu   MenuFvwmManPages "Help" Title
 # Silent suppresses any errors (such as keyboards with no Menu key).
 Silent Key F1      A M Menu MenuFvwmRoot
 Silent Key Menu    A A Menu MenuFvwmRoot
-Silent Key Tab     A M WindowList Root c c NoDeskSort, NoGeometry, SelectOnRelease Meta_L
+Silent Key Tab     A M WindowList Root c c NoDeskSort, NoGeometry, SelectOnRelease Meta_L, CurrentAtEnd
 Silent Key F1      A C GotoDesk 0 0
 Silent Key F2      A C GotoDesk 0 1
 Silent Key F3      A C GotoDesk 0 2