[master] dbf5d5d Add back an errno.h header

[Poul-Henning Kamp]

commit dbf5d5dbc2cb6a56b5bcf612172cf53eb6306c8e
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Wed Mar 18 21:31:23 2015 +0000

    Add back an errno.h header

diff --git a/bin/varnishd/mgt/mgt_jail_solaris.c b/bin/varnishd/mgt/mgt_jail_solaris.c
index 8a8e971..16f3ccc 100644
--- a/bin/varnishd/mgt/mgt_jail_solaris.c
+++ b/bin/varnishd/mgt/mgt_jail_solaris.c
@@ -206,6 +206,7 @@
 
 #ifdef HAVE_SETPPRIV
 
+#include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>