NFSv4.1/4.2 has an alternative to the acl attribute, called
dacl, that includes support for the ACL_ENTRY_INHERITED flag,
called NFSV4ACE_INHERITED in NFSv4.
This patch adds a dacl argument to nfsrv_buildacl(),
nfsrv_dissectacl() and nfsrv_dissectace(), so that they
will handle NFSV4ACE_INHERITED when dacl == true.
Since these functions are always called with dacl == false
for this patch, semantics should not have changed.
A future patch will add support for dacl.
MFC after: 2 weeks
0fa074b53e