emerging gentoo-sources failing due to file collisions
per Helmut Jarausch:
rm -rf /usr/src/linux-2.6.31-gentoo-r6
followed by re-emerge of gentoo-sources-2.6.31-r6
P.S. The mystery remains how those conflicting files got there in the first place. Certainly not by any conscious act on my part.
But, at this point I don't really care because things are back in balance again. **