patch 7.4.1310

Problem:    Jobs don't open a channel.
Solution:   Create pipes and add them to the channel.  Add ch_logfile().
            Only Unix for now.

src/version.c

@@ -747,6 +747,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1310,
 /**/
     1309,
 /**/