Debug logging for SCAVENGE-STACK.
Debug logging for SCAVENGE-STACK.

rvedam/Mezzano,AugustusHuang/Mezzano,froggey/Mezzano,varjagg/Mezzano,AugustusHuang/Mezzano,rvedam/Mezzano,froggey/Mezzano,varjagg/Mezzano