- fixed typo in ipaaca documentation

- made sure the initializer is only initialized once
- toString methods for payload and localIU

- Minor cleanups

A new dedicated MessageConverter was added at the same time.

Important: Java version does not yet contain
  Messages (or Retraction, for that matter)
Note: Messages are received and routed to the
  handlers with the special new MESSAGE event
  type, as opposed to ADDED. This decision is
  of course open for discussion.
Additional bugfix: Typecasting conflict in C++
  payloads fixed. Reverted to cstdlib casts
  to avoid bulky exceptions being thrown.

Important: Java version does not yet contain
  Messages (or Retraction, for that matter)
Note: Messages are received and routed to the
  handlers with the special new MESSAGE event
  type, as opposed to ADDED. This decision is
  of course open for discussion.

Defaults from /etc/rsb.conf and ~/.config/rsb.conf were falsely erased, fixed.

Implemented retraction handler. Replaced deprecated converter repository call.

** returned to 'soashared' build system for the time being **
Example 'component' source file added.

Now splitting ipaaca into sub-projects "ipaacalib" and "ipaacatools"

Conflicts:
	cpp/build.xml