Make it possible to compile the patterns utility with the source tree
checked out anywhere.

While here, tidy up the Makefile a bit.

ok deraadt@

We are moving back to a shell-script based fw_update, written in such a
way that the install script can also run it. This allows earlier retrieval
of downloaded firmwares, based upon patterns found i

We are moving back to a shell-script based fw_update, written in such a
way that the install script can also run it. This allows earlier retrieval
of downloaded firmwares, based upon patterns found in dmesg.
many iterations of this in snaps for about a month.

show more ...

install man page too

welcome fw_update, which installs and/or updates non-free firmware for
detected and previously installed devices that needs it

"go ahead and commit it" deraadt@