Do not transfer unneeded training zero bytes in INQUIRY response.

It is an addition to r269631.

(cherry picked from commit f7e6c416bfd801081a2d8a39aa03c9b43677a95d)
Fix couple issues with ROD tokens content.

MFC after:	3 days

(cherry picked from commit b2a100cdc2686d26247a0d93c72892c7cfe48eff)
Plug compressed buffer leak, based on an old patch by avg@.
Intel S3700 SSD quirks

Conflicts:
	sys/cam/scsi/scsi_da.c
ata_da: handle ATA_SF_ENAB_WCACHE
ZFS/GFS handling fixes
Disabled arc_event_lowmem vm_lowmem handler