Import SQLite 3.10.2.

third_party/sqlite/src/ext/fts5/fts5_hash.c

 /*
 ** 2014 August 11
 **
 ** The author disclaims copyright to this source code.  In place of
 ** a legal notice, here is a blessing:
 **
 **    May you do good and not evil.
 **    May you find forgiveness for yourself and forgive others.
 **    May you share freely, never taking more than you give.
 **
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     *pzTerm = p->zKey;
     *ppDoclist = (const u8*)&p->zKey[nTerm+1];
     *pnDoclist = p->nData - (FTS5_HASHENTRYSIZE + nTerm + 1);
   }else{
     *pzTerm = 0;
     *ppDoclist = 0;
     *pnDoclist = 0;
   }
 }