explicit namespaces. Modify it to use libutil for string/constant
namespace conversions. Update the documentation to take into account
the new interface.
Obtained from: TrustedBSD Project
attributes (recently committed). Using extattrctl, the extended attribute
service may be started and stopped for specific file systems; specific
attributes may be enabled or disabled, and the backing file for each
attribute configured. Also, backing files may be initialized.
Reviewed by: adrian, bp, freebsd-fs, the unthanked masses
Obtained from: TrustedBSD
