For mpd codes, rename dash_packager to edash_packager; for media codes, add namespace edash_packager. Change-Id: I1120e6110c734cd02bdbe15f1cf7abddcdfdd7ea
Change-Id: Ia29ce678c0e64e886cdd92bbfda727768356fd21
(second attempt due to conflicts). Change-Id: I2143921bcacdbaa6cfcaf59602713294b4b1f6ee