Don't auto-start or allow extattrctl for UFS2 file systems, as UFS2 has native extended attributes.  This didn't interfere with the operation of UFS2 extended attributes, but the code shouldn't be running for UFS2.
Don't auto-start or allow extattrctl for UFS2 file systems, as UFS2 has
native extended attributes.  This didn't interfere with the operation of
UFS2 extended attributes, but the code shouldn't be running for UFS2.

MFC after:	2 weeks

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase