Add recursive support to setfacl(1).
github-issue #99

The manpage entry still needs to be updated.
Use -Wl, to pass options to the linker for PowerPC's boot1.chrp.

MFC after:	3 days
Merge remote-tracking branch 'freebsd/master' into hardened/current/master
Merge remote-tracking branch 'origin/hardened/current/master' into hardened/current/libressl