Unify caprotocolmessage to fix bugs in different versions.

Unify caprotocolmessage to fix bugs in different versions.

Unified the caprotocolmessage sources to a single version that
brings together bug fixes that had gone individually into either
one copy or the other, but not both.

Will also allow testing of the arduino-centric code under Linux
builds.

Follow-up to https://gerrit.iotivity.org/gerrit/#/c/470/

Fixes IoT-400

Change-Id: I47b726c940ef1dd45a26cf160b92e1cbbd7f5f2e
Signed-off-by: Jon A. Cruz <jonc@osg.samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/583
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Erich Keane <erich.keane@intel.com>