Release 1.8

Update README for v1.7.2

Changed version to 1.7.2

Removed binary from the thermald git

This was not liked by distribution maintainers. So need to find
another way to package the binary.
This binary will be hosted in a separate repository.

Add Cannon Lake support

Added cpuid of Cannon Lake.

Add Cannon Lake support

Added cpuid of Cannon Lake.

Fix compile error with gnu-clang for unused private field

- zone is a private field and is not getting used, so remove
this.
- trend_decrease_start in thd_model.h, same issue as above
- trip_point+cnt is not used
- zone in thd_zone_generic
- turbo_state is not used
- max_offset in thd_cdev_intel_pstate_driver
- id in thd_cpu_defualt_binding

Update README.txt for 1.7

Update release number

Merge pull request intel#103 from 01org/development_1_5

Development 1 5