AFAIK there is no way to Log Kernel Panics to a Logfile.

OSX has two way´s for developer to track Kernal Panics. First is a Lan connection from another Mac. This does not work on Hack´s AFAIK.
Also OSX write Kernel Logs in the PRAM, then write it into a Log file during the next Startup. Problem : We have no PRAM :P ^^

The only way is to force the Kernel to Post a Detail KP. Voodoo Kernels does this Automatic, but Vanilla Kernel needs a Kernel Flag during Startup.

Ahh.. i found it!

debug=0x144

Write this into your com.apple.boot.plist or during Startup as Kernel flag.