rc.initial: clean up the banner a bit

src/etc/rc.initial.banner

@@ -33,12 +33,13 @@ require_once("config.inc");
 require_once("gwlb.inc");
 require_once("interfaces.inc");
 
-$version = trim(file_get_contents('/usr/local/opnsense/version/opnsense'));
+$version = strtok(file_get_contents('/usr/local/opnsense/version/opnsense'), '-');
 $hostname = $config['system']['hostname'];
 $product = $g['product_name'];
-$machine = trim(`uname -m`);
+$machine = trim(shell_exec('uname -m'));
+$flavour = strtok(exec('/usr/local/bin/openssl version'), ' ');
 
-print "\n*** Welcome to {$product} {$version} ({$machine}) on {$hostname} ***\n";
+print "\n*** Welcome to {$product} {$version} ({$machine}/${flavour}) on {$hostname} ***\n";
 
 $iflist = get_configured_interface_with_descr(false, true);