initial lucene port code and test data
port more Lucene search code
fix compile error
fix compile error; add collector logic
consolidate collector logic
switch to new inherit structure
fix lucene/index compile error
fix compile erros
fix compile error
fix compile erros
fix compile erros
add directory/lockfactory related code
add base composite reader
add segment related logic with erros
add more segments related logic
fix compile error
add listall method
consolidate simple fs related code
add IndexInput code
fix compile error; add corrupt index error