/usr/include/CLucene/util/ is in libclucene-dev 0.9.21b-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/CLucene/util/Arrays.h
/usr/include/CLucene/util/BitSet.h
/usr/include/CLucene/util/Equators.h
/usr/include/CLucene/util/FastCharStream.h
/usr/include/CLucene/util/MD5Digester.h
/usr/include/CLucene/util/Misc.h
/usr/include/CLucene/util/PriorityQueue.h
/usr/include/CLucene/util/Reader.h
/usr/include/CLucene/util/StringBuffer.h
/usr/include/CLucene/util/StringIntern.h
/usr/include/CLucene/util/ThreadLocal.h
/usr/include/CLucene/util/VoidList.h
/usr/include/CLucene/util/VoidMap.h
/usr/include/CLucene/util/bufferedstream.h
/usr/include/CLucene/util/dirent.h
/usr/include/CLucene/util/fileinputstream.h
/usr/include/CLucene/util/googlesparsemap.h
/usr/include/CLucene/util/inputstreambuffer.h
/usr/include/CLucene/util/jstreamsconfig.h
/usr/include/CLucene/util/streambase.h
/usr/include/CLucene/util/stringreader.h
/usr/include/CLucene/util/subinputstream.h