Fix DTAG NDNProtocolDataUnit to encode as "NDN\202\000", same as NDNx. Refs #1056.
CHANGELOG: Added bug fix for DTAG NDNProtocolDataUnit. Refs #1056.
Merge branch 'issue/1056-fix-DTAG-NDNProtocolDataUnit'. Refs #1056.
http://redmine.named-data.net/issues/1056