For mpd codes, rename dash_packager to edash_packager; for media codes,
add namespace edash_packager.
Change-Id: I1120e6110c734cd02bdbe15f1cf7abddcdfdd7ea
There are two different problems:
1. int64/uint64 formatting: %lu formats unsigned long. However, the
definition of long is different on 32-bit machine and 64-bit machine.
We need to use a macro to format int64/uint64 correctly.
2. The packager target is dependent on openssl.
Change-Id: I5d51a500c3cb8bcd4b4049ab7ec5a985ac486a76