/usr/include/CLucene/search/ is in libclucene-dev 2.3.3.4+dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/CLucene/search/BooleanClause.h
/usr/include/CLucene/search/BooleanQuery.h
/usr/include/CLucene/search/CachingSpanFilter.h
/usr/include/CLucene/search/CachingWrapperFilter.h
/usr/include/CLucene/search/ChainedFilter.h
/usr/include/CLucene/search/Compare.h
/usr/include/CLucene/search/ConstantScoreQuery.h
/usr/include/CLucene/search/DateFilter.h
/usr/include/CLucene/search/Explanation.h
/usr/include/CLucene/search/FieldCache.h
/usr/include/CLucene/search/FieldDoc.h
/usr/include/CLucene/search/FieldSortedHitQueue.h
/usr/include/CLucene/search/Filter.h
/usr/include/CLucene/search/FilterResultCache.h
/usr/include/CLucene/search/FilteredTermEnum.h
/usr/include/CLucene/search/FuzzyQuery.h
/usr/include/CLucene/search/Hits.h
/usr/include/CLucene/search/IndexSearcher.h
/usr/include/CLucene/search/MatchAllDocsQuery.h
/usr/include/CLucene/search/MultiPhraseQuery.h
/usr/include/CLucene/search/MultiSearcher.h
/usr/include/CLucene/search/MultiTermQuery.h
/usr/include/CLucene/search/PhraseQuery.h
/usr/include/CLucene/search/PrefixQuery.h
/usr/include/CLucene/search/Query.h
/usr/include/CLucene/search/QueryFilter.h
/usr/include/CLucene/search/RangeFilter.h
/usr/include/CLucene/search/RangeQuery.h
/usr/include/CLucene/search/Scorer.h
/usr/include/CLucene/search/ScorerDocQueue.h
/usr/include/CLucene/search/SearchHeader.h
/usr/include/CLucene/search/Searchable.h
/usr/include/CLucene/search/Similarity.h
/usr/include/CLucene/search/Sort.h
/usr/include/CLucene/search/SpanFilter.h
/usr/include/CLucene/search/SpanFilterResult.h
/usr/include/CLucene/search/SpanQueryFilter.h
/usr/include/CLucene/search/TermQuery.h
/usr/include/CLucene/search/WildcardQuery.h
/usr/include/CLucene/search/WildcardTermEnum.h
/usr/include/CLucene/search/spans/
/usr/include/CLucene/search/spans/SpanFirstQuery.h
/usr/include/CLucene/search/spans/SpanNearQuery.h
/usr/include/CLucene/search/spans/SpanNotQuery.h
/usr/include/CLucene/search/spans/SpanOrQuery.h
/usr/include/CLucene/search/spans/SpanQuery.h
/usr/include/CLucene/search/spans/SpanScorer.h
/usr/include/CLucene/search/spans/SpanTermQuery.h
/usr/include/CLucene/search/spans/SpanWeight.h
/usr/include/CLucene/search/spans/Spans.h