Remove debugfs dependency

`e2fsprog` package has done some changes on version 1.13 that breaks
`debugfs` module regarding files names management, so it doesn't works
correctly on Ubuntu 16.10

Author: piranna

package.json

@@ -41,7 +41,7 @@
     "bin-pwd": "^0.0.0",
     "davius": "^0.0.1",
     "dhcpjs": "^0.5.0",
-    "debugfs": "^0.0.2",
+    "fs-extra": "^0.30.0",
     "genext2fs": "^1.4.1-0",
     "ifconfig": "NodeOS/ifconfig",
     "ip": "NodeOS/ip",

scripts/build

@@ -172,22 +172,27 @@ if [[ ! -f $STEP_DIR ]]; then
     pc_* | raspberry_*)
       DISK_SIZE=192  # Size in MB
 
+      (
+        cd $OBJECTS
+        ../../scripts/gendevicetable.js nodeos 1 1 || exit 40
+      ) > $STEP_DIR || err $?
+
       genext2fs -b $((DISK_SIZE*1024)) \
           --root $OBJECTS              \
+          --devtable $STEP_DIR         \
           --block-size          1024   \
           --bytes-per-inode     4096   \
           --reserved-percentage    0   \
           --creator-os linux           \
           --allow-holes                \
-          --squash $STEP_DIR           || err 40
+          --squash $STEP_DIR           || err 41
 
       # Set filesystem features and users files permissions
-      tune2fs   $STEP_DIR -O has_journal,filetype > /dev/null || err 41
+      tune2fs   $STEP_DIR -O has_journal,filetype > /dev/null || err 42
       e2fsck -y $STEP_DIR                         > /dev/null
       if [ $? -gt 2 ]; then
-        err 42
+        err 43
       fi
-      debugfs.chown $STEP_DIR nodeos 1 || err 43
 
       # Mark the newly created filesystem image as the latest one
       ln -sf $CPU out/latest || err 44

scripts/gendevicetable.js

@@ -0,0 +1,26 @@
+#!/usr/bin/env node
+
+const fs       = require('fs-extra')
+const relative = require('path').relative
+
+
+const argv = process.argv
+
+if(argv.length < 4)
+{
+  console.warn('Usage:', argv[1], '<dir> <uid> <gid>')
+  process.exit(1)
+}
+
+const uid = argv[3]
+const gid = argv[4]
+
+fs.walk(process.argv[2]).on('data', function(item)
+{
+  const path  = relative(process.cwd(), item.path)
+  const stats = item.stats
+  const mode  = (stats.mode & fs.constants.S_IRWXU).toString(8)
+
+  if(stats.isFile()) return console.log(path, 'f', mode, uid, gid)
+  if(stats.isDirectory())   console.log(path, 'd', mode, uid, gid)
+})