The zfs dracut modules should be installed under the --datadir
not --datarootdir path. This was just an oversight in the
original Makefile.am.
After this change %{_datadir} can now be set safely in the
zfs.spec file. The 'make install' location is now consistent
with the location expected by the spec file.
-pkgdracutdir = $(datarootdir)/dracut/modules.d/90zfs
+pkgdracutdir = $(datadir)/dracut/modules.d/90zfs
dist_pkgdracut_SCRIPTS = \
$(top_srcdir)/dracut/90zfs/90-zfs.rules \
$(top_srcdir)/dracut/90zfs/check \