nfsd: use get_acl and ->set_acl

Remove the boilerplate code to marshall and unmarhall ACL objects into
xattrs and operate on the posix_acl objects directly.  Also move all
the ACL handling code into nfs?acl.c where it belongs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --cc fs/nfsd/acl.h
Simple merge

diff --cc fs/nfsd/nfs2acl.c
Simple merge

diff --cc fs/nfsd/nfs3acl.c
Simple merge

diff --cc fs/nfsd/nfs4acl.c
Simple merge

diff --cc fs/nfsd/nfs4proc.c
Simple merge

diff --cc fs/nfsd/vfs.c
Simple merge

diff --cc fs/nfsd/vfs.h
Simple merge