Fixed a bug in the PGN filtering demo.
Renamed module code files.

No longer intend to use PDUs for communication.
Module uses "messages" and tries to claim address

Address claiming doesn't work when there is contention.
Changed module test program to use new interface.
Made resend_can.sh ignore extra columns in files.

Did this to allow appending timestamp etc. to CAN frames.
Address claiming works. (Aug. 1 bug found...)

Sending returns an error if the address was taken after bind.
Can't decide if that's good, or the module should claim a new one.
Implemented filtering on PGN, address, etc.

Probably needs some polishing...
Added all the tools.

They have a Makefile now too.
Made makefile work for installing modules.
Fixed SocketCAN not loading ISOBUS proto module.
Implemented priority.

Haven't really tested it...
Merge pull request #2 from awlayton/master

Mostly Address Claiming Works