Merge pull request #712 in SNORT/snort3 from cmake_cpputest to master

Merge pull request #712 in SNORT/snort3 from cmake_cpputest to master

Squashed commit of the following:

commit fb4c001b0b8709a3505bb044705be8a2cedd84d8
Author: Michael Altizer <mialtize@cisco.com>
Date:   Fri Nov 18 11:50:08 2016 -0500

    cmake: Correct package name used in HS and HWLOC so that REQUIRED works.

commit 3a543585194bf2c30993cca4247bfd7f6ef88027
Author: Michael Altizer <mialtize@cisco.com>
Date:   Fri Nov 18 11:48:20 2016 -0500

    cmake: Improve detection and use of CppUTest in non-standard locations