cmake: VOTCA_PATH for tools is in PROJECT_BINARY_DIR
cmake: VOTCA_PATH for tools is in PROJECT_BINARY_DIR

MrTheodor/csg,votca/csg,MrTheodor/csg,votca/csg,MrTheodor/csg,MrTheodor/csg,votca/csg,MrTheodor/csg,votca/csg