add --transaction argument with two possible values: 'first' and 'last'
add --transaction-type argument to allow users select type of transactions
these transactions would be passed to scrips for processing, so users
   can use conditions, actions and templates that check or use properties of
   transaction
also some existant actions, conditions and templates require scrip or
  scrip action objects to process normally, as we have no these objects
  available we now pass void (not loaded) objects. This change would allow
  users to use notify actions with crontool.

git-svn-id: svn+ssh://svn.bestpractical.com/svn/bps-public/rt/branches/3.4-RELEASE@5534 e417ac7c-1bcc-0310-8ffa-8f5827389a85