util: Add a utility script for decoding packet traces
util: Add a utility script for decoding packet traces

This patch adds a simple Python script that reads the protobuf-encoded
packet traces (not gzipped), and prints them to an ASCII trace file.

The script can also be used as a template for other packet output
formats.

hoangt/tpzsimul.gem5,vovojh/gem5,vovojh/gem5,vovojh/gem5,hoangt/tpzsimul.gem5,vovojh/gem5,vovojh/gem5,hoangt/tpzsimul.gem5,vovojh/gem5,hoangt/tpzsimul.gem5,pombredanne/http-repo.gem5.org-gem5-,pombredanne/http-repo.gem5.org-gem5-,pombredanne/http-repo.gem5.org-gem5-,vovojh/gem5,hoangt/tpzsimul.gem5,hoangt/tpzsimul.gem5,pombredanne/http-repo.gem5.org-gem5-,hoangt/tpzsimul.gem5,pombredanne/http-repo.gem5.org-gem5-,pombredanne/http-repo.gem5.org-gem5-,pombredanne/http-repo.gem5.org-gem5-