That would be the German developer Christian Bauer. He is the original Basilisk II creator. Meanwhile the french developer Gwenole had been working on integrating the JIT engine into Basilisk II (and SheepShaver). Christian allowed Gwenole to maintain the Basilisk II CVS repository around 2001-2002 and Gwenole started commiting the JIT enabled code.

That Basilisk II configure.(ac) file is a later version than the one in the CVS snapshot I linked to above. I'll have to go through all my old CDRs to see if I have more Basilisk II source.

Good luck and thank you!