delphij 97f39d2a06 Return EOPNOTSUPP instead of EINVAL when doing chflags(2) over an old
format ZFS, as defined in the manual page.

Submitted by:	pjd (response of my original patch but bugs are mine)
MFC after:	3 days
2009-10-01 18:58:26 +00:00
..
2009-05-23 16:01:58 +00:00