merge with onnv_147
Reviewed by: garrett@nexenta.com
Approved by: garrett@nexenta.com

6812663 Running out of bits in x86_feature

6891259 CPUID instruction support already present, duplicate code unnecessary
6795073 some issues reported by coverity for iscsi initiator

6868616 Using Intel CRC32 instruction to accelerate CRC32c algorithm
Contributed by Xinping Huang <xinping.huang@intel.com>