Fix compilation with clang11
Fixes errors of this type:
../Detector/Rich2/src/Rich2GeoUtil.cpp:102:75: error: cannot pass object of non-trivial type 'const std::string' (aka 'const basic_string<char>') through variadic function; call will abort at runtime [-Wnon-pod-varargs]
"Rich2GeoUtil : ", "Now building Rich2SuperStrTransforms %s", aSupStrPhysFileName );
Some warnings still remain.
Edited by Rosen Matev