updated for version 7.3.087

Problem:    EINTR is not always defined.
Solution:   Include errno.h in vim.h.

src/version.c

@@ -714,6 +714,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    87,
 /**/
     86,
 /**/