Bug fixes

changes addtothis_perm error to addthis_perm

makes a addtothis_perm to addthis perm

Thanks Media Munkey

Development release for Drupal 6

BUg with using the wrong escape string function for the DB. Thanks to boydjd for find that.

- Added hook_init() to initialize the attachment process

Switching back to hook_init. Hook_boot does not need to run every page request after all.
Fixing http://drupal.org/node/248867 with this.