Bug #2857 fixed bug in igtl_message_dump
Bug #2857 changed igtl_test_data_tdata.h to include error metric
Bug #2857 removed extra hex dump from igtl_tdata_test
Feature #2857 added error to pack and unpack functions
Feature #2857 created new message types, to enable backward compatability
Feature #2857 created tests for new message types, to enable backward compatability
Feature #2857 put base tdata stuff back to how it was
Feature #2857 separated tdata and full tdata
Feature #2857 added switch to enable choice of full or truncated tdata
Feature #2857 added unit tests for full tdata