patch 7.4.1373

Problem:    Calling a Vim function over a channel requires turning the
            arguments into a string.
Solution:   Add the "call" command. (Damien)  Also merge "expr" and "eval"
            into one.

src/version.c

@@ -747,6 +747,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1373,
 /**/
     1372,
 /**/