SQLite: Files in ext/fts2/ of a70ea7202d8ffb03

Files in directory ext/fts2 of check-in a70ea7202d8ffb03

fts2.c
fts2.h
fts2_hash.c
fts2_hash.h
fts2_porter.c
fts2_tokenizer.h
fts2_tokenizer1.c
README.txt

This folder contains source code to the second full-text search
extension for SQLite.  While the API is the same, this version uses a
substantially different storage schema from fts1, so tables will need
to be rebuilt.