Import SQLite 3.8.7.4.

third_party/sqlite/src/ext/misc/nextchar.c

 /*
 ** 2013-02-28
 **
 ** 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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   if( rc==SQLITE_OK ){
     rc = sqlite3_create_function(db, "next_char", 4, SQLITE_UTF8, 0,
                                  nextCharFunc, 0, 0);
   }
   if( rc==SQLITE_OK ){
     rc = sqlite3_create_function(db, "next_char", 5, SQLITE_UTF8, 0,
                                  nextCharFunc, 0, 0);
   }
   return rc;
 }