Client::Unit: moved driver init to init().
Moved GR includes below all other includes to avoid trampling other GR configs.
Client::Unit: only re-enable stdout if it's not already enabled.¹

1: Woo paranoia!
dep, premake_common: corrected Hord and Beard dir names.
dep, premake_common: replaced murk with Cacophony; rewrote some Net::CmdStreamer serialization.