grokevt-builddb(1) on Linux

The text e8748235025f, as Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it.

Builds a database tree based on a single windows system for the purpose of event log conversion.