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/utils_linux.go

@@ -0,0 +1,48 @@
+/*
+ * Mini Object Storage, (C) 2014 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// !build linux,amd64
+
+package scsi
+
+import (
+	"io/ioutil"
+	"os"
+	"path"
+	"strings"
+)
+
+func getattrs(scsiAttrPath string, scsiAttrList []string) map[string][]byte {
+	attrMap := make(map[string][]byte)
+	for _, attr := range scsiAttrList {
+		value, _ := ioutil.ReadFile(path.Join(scsiAttrPath, attr))
+		attrMap[attr] = value
+	}
+	return attrMap
+}
+
+func filterdevices(files []os.FileInfo) (scsidevices []string) {
+	for _, fi := range files {
+		if strings.Contains(fi.Name(), "host") {
+			continue
+		}
+		if strings.Contains(fi.Name(), "target") {
+			continue
+		}
+		scsidevices = append(scsidevices, fi.Name())
+	}
+	return scsidevices
+}