m8: commonize libtime_genoff

* md5's matched
* this blob needs special treatment if we are to use qc time services
* update both extract-files.sh and setup-files.sh
* no need to create m8-vendor.mk twice

Change-Id: I3d603713e873b024eb0fab0285ed4965da31f7c0

Conflicts:
	setup-makefiles.sh