#22 Support for ForwardException and other things

[Carlos Eduardo]

This patch is an attempt to provide support for:
- ForwardException (LOCATION_FORWARD)
- Methods target and effective_target
- Exception info available at interception points
- bugfix: method add_reply_service_context now works at the send_exception and send_other interception points. It should work at the send_reply interception point also, but I didn't test this.
- AbstractGiopRequest now has an internal setter for Reply

It should by no means be considered correct / well tested. It works for me, though.

Another note: the version of the VS project is still 1.9.0, it seems this should be corrected to 1.9.3 or bigger.

[Carlos Eduardo]

ForwardException support