#710210 by rfay, Martin.Schwenke : Followup: Moved the token flush to places where it will work with more scenarios

#736086 by rfay, heltem: Fixed Cannot use object of type stdClass as array. Removed extraneous hook invocation.

create branch 'DRUPAL-6--2'.

Cherrypick from master 2010-02-17 18:37:29 UTC Randy Fay <rfay@30906.no-reply.drupal.org> '#710210 by heltem, rfay: Fixed [role] token never interpreted. Added [role_changed] token':
    CHANGELOG.txt

2.x update, implementing #513936 with quite a lot of additional work. But it implements tokens from token module and profile tokens. This will break if a user upgrades and does not change their message.