Removing tags requires permission "delete contacts", should require "edit all contacts"

Removal of tags is not allowed if the user does not have the permission "delete contacts". The user will get the error message:
API permission check failed for entity_tag/delete call; missing permission: delete contacts.

Anyhow, this does not seem to be the intended behaviour. The corresponding permission should be "edit all contacts", as is also stated in the documentation: http://wiki.civicrm.org/confluence/display/CRMDOC/Default+Permissions+and+Roles

From an admin's perspective, I think it's a desirable scenario to let users edit tags, but not delete contacts.

I tried this on two installs of the 4.3 and 4.4 branch. We don't have a patch for this and won't be able to provide one in the next weeks.