First attempt to compile for FreeBSD, using the Windows approach to pse

server/pse_freebsd.go

@@ -0,0 +1,12 @@
+// Copyright 2015 Apcera Inc. All rights reserved.
+
+package server
+
+// This is a placeholder for now.
+func procUsage(pcpu *float64, rss, vss *int64) error {
+	*pcpu = 0.0
+	*rss = 0
+	*vss = 0
+
+	return nil
+}