Full restructure in accordance with

- pkg/{subsystem}/{package} style
  - modify Makefile to reflect the new style,
    consolidate various entries
  - add a dummy ``main.go`` at top level

pkg/os/scsi/scsi_test.go

@@ -0,0 +1,23 @@
+// !build linux,amd64
+package scsi
+
+import (
+	. "gopkg.in/check.v1"
+	"testing"
+)
+
+type MySuite struct{}
+
+var _ = Suite(&MySuite{})
+
+func Test(t *testing.T) { TestingT(t) }
+
+func (s *MySuite) TestSCSI(c *C) {
+	var d Devices
+	err := d.Get()
+	c.Assert(err, IsNil)
+	c.Assert(len(d.List), Equals, 1)
+
+	c.Assert(len(d.List[0].Scsiattrmap), Not(Equals), 0)
+	c.Assert(len(d.List[0].Diskattrmap), Not(Equals), 0)
+}