vim-patch:7.4.688 #4159

Problem:    When "$" is in 'cpo' the popup menu isn't undrawn correctly.
            (Issue 166)
Solution:   When using the popup menu remove the "$".

478c46e50f

NOTE: To reproduce in nvim:
    nvim -u NONE -c 'exe "norm iaaa iabbbbbb acc" | norm yyp' -c 'set cpo+=$'

src/nvim/version.c

@@ -600,7 +600,7 @@ static int included_patches[] = {
   // 691 NA
   690,
   // 689,
-  // 688,
+  688,
   // 687 NA
   686,
   685,