[sql] Import SQLite 3.17.0.

third_party/sqlite/src/ext/userauth/userauth.c

 /*
 ** 2014-09-08
 **
 ** 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.
 **
 *************************************************************************
 **
 ** This file contains the bulk of the implementation of the
 ** user-authentication extension feature.  Some parts of the user-
 ** authentication code are contained within the SQLite core (in the
 ** src/ subdirectory of the main source code tree) but those parts
 ** that could reasonable be separated out are moved into this file.
 **
 ** To compile with the user-authentication feature, append this file to
 ** end of an SQLite amalgamation, then add the SQLITE_USER_AUTHENTICATION
 ** compile-time option.  See the user-auth.txt file in the same source
 ** directory as this file for additional information.
 */
 #ifdef SQLITE_USER_AUTHENTICATION
-#ifndef _SQLITEINT_H_
+#ifndef SQLITEINT_H
 # include "sqliteInt.h"
 #endif
 
 /*
 ** Prepare an SQL statement for use by the user authentication logic.
 ** Return a pointer to the prepared statement on success.  Return a
 ** NULL pointer if there is an error of any kind.
 */
 static sqlite3_stmt *sqlite3UserAuthPrepare(
   sqlite3 *db,
@@ skipping 310 matching lines @@
     return SQLITE_OK;
   }
   pStmt = sqlite3UserAuthPrepare(db,
               "DELETE FROM sqlite_user WHERE uname=%Q", zUsername);
   if( pStmt==0 ) return SQLITE_NOMEM;
   sqlite3_step(pStmt);
   return sqlite3_finalize(pStmt);
 }
 
 #endif /* SQLITE_USER_AUTHENTICATION */