vim-patch:7.4.468

Problem:    Issue 26: CTRL-C does not interrupt after it was mapped and then
	    unmapped.
Solution:   Reset mapped_ctrl_c. (Christian Brabandt)

https://code.google.com/p/vim/source/detail?r=v7-4-468

src/nvim/version.c

@@ -270,7 +270,7 @@ static int included_patches[] = {
   //471 NA
   470,
   //469 NA
-  //468,
+  468,
   467,
   //465 NA
   //464 NA