Added option to build unit tests - BUILD_UNIT_TESTS default is no.
Added option to build unit tests - BUILD_UNIT_TESTS default is no.

UCL-RITS/rcps-buildscripts,UCL-RITS/rcps-buildscripts,UCL-RITS/rcps-buildscripts,UCL-RITS/rcps-buildscripts,UCL-RITS/rcps-buildscripts