Includes:
#480064 by phayes, arhak and shadowx: Use url() in theme function to all barcode module to work on drupal sites installed in subdirectories
#588266: split barcode into two modules. One cck module and one API module
#602498: implementation of hook_perm
#595996 by Pasqualle: A variety improvements submitted as an incomplete rewrite of the barcode module. This development version is based on the code in this issue.
