Revert "configure: let build-utils/ be a symlink to utils/"
Revert "configure: let build-utils/ be a symlink to utils/"

This reverts commit 4fe80fc08b35600763257d4c51fdf391ff3fadb5.

luigirizzo/netmap,luigirizzo/netmap,luigirizzo/netmap,luigirizzo/netmap,luigirizzo/netmap