patch 7.4.1914

Problem:    Executing autocommands while using the signal stack has a high
            chance of crashing Vim.
Solution:   Don't invoke autocommands when on the signal stack.

src/version.c

@@ -753,6 +753,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1914,
 /**/
     1913,
 /**/