Fix for ROOT-6589 (CMake with -Dtesting=1: Compression.h not in include/)
Fix for ROOT-6589 (CMake with -Dtesting=1: Compression.h not in include/)

tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot