Add Rex::Tar

This just inherits from Gem::Package::Tar{Reader,Writer} at the moment.
We may want to build out higher-level methods than what the inherited
code already provides. Or don't inherit at all.

lib/rex.rb

@@ -48,8 +48,10 @@ require 'rex/text'
 require 'rex/random_identifier'
 # library for creating Powershell scripts for exploitation purposes
 require 'rex/powershell'
-# Library for processing and creating Zip compatbile archives
+# Library for processing and creating Zip compatible archives
 require 'rex/zip'
+# Library for processing and creating tar compatible archives (not really a gem)
+require 'rex/tar'
 # Library for parsing offline Windows Registry files
 require 'rex/registry'
 # Library for parsing Java serialized streams

lib/rex/tar.rb

@@ -0,0 +1,8 @@
+# -*- coding: binary -*-
+
+require 'rubygems/package'
+
+module Rex::Tar
+  class Reader < Gem::Package::TarReader; end
+  class Writer < Gem::Package::TarWriter; end
+end