CBOR rebase onto master for merge/review

CBOR rebase onto master for merge/review

The CA layer has been converted to use binary data, rather
than string data to support CBOR as a transport.  The CSDK has
been changed to use the OCPlatform object model instead of json
strings.  Underneath this, the JSON encoding has been replaced
with CBOR.

Also, some of the previous blockwise transfer functionality has
been removed, since the blockwise-transfer functionality has been
pushed ot the CA stack.

Change-Id: I6423a5180643cea3d311ec7497b246117f7c02b0
Signed-off-by: Erich Keane <erich.keane@intel.com>
Signed-off-by: Omkar Hegde <omkar.m.hegde@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/1613
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>