Add some scripts to automate target listing and generating build-info

This adds tools/list_targets.pl and tools/build-info.pl. list_targets does
exactly what it sounds like - it lists targets by target status. build-info
automates the generation of build-info.release for new releases.

Change-Id: I4c859fdeb54c8cc645832a7c4192f9d18590031e
2 files changed