net/frr10: Enable pimd, install daemons in lib/frr

Add four patches to make pimd work on FreeBSD (submitted upstream).

Daemons move from ${PREFIX}/sbin to ${PREFIX}/lib/frr, matching the
Linux packages. Only vtysh and mtracebis stay in bin/. This avoids filename
collision with net/openbgpd*, net/pimd, net/quagga, etc.