sudo apt-get build-dep nautilus
sudo apt-get install quilt
export QUILT_PATCHES=debian/patches
apt-get source nautilus
cd nautilus*
quilt new 999_full_dates.patch
quilt edit libnautilus-private/nautilus-column-utilities.c

"attribute", "date_modified",

"attribute", "date_modified_full",

quilt refresh
fakeroot dpkg-buildpackage
cd ..
killall nautilus
sudo dpkg -i nautilus_*.deb
nautilus &