Update sqlite3

SquiLu-ext/sqlite3.h

@@ -113,7 +113,7 @@ extern "C" {
 */
 #define SQLITE_VERSION        "3.13.0"
 #define SQLITE_VERSION_NUMBER 3013000
-#define SQLITE_SOURCE_ID      "2016-04-15 15:03:27 3e217d6265ecd16db783bed7ce1d9d0f9c4828bb"
+#define SQLITE_SOURCE_ID      "2016-05-03 19:40:54 1b43358f8979c4f18519e824e0d5f6ef2250107c"
 
 /*
 ** CAPI3REF: Run-Time Library Version Numbers
@@ -1944,12 +1944,30 @@ struct sqlite3_mem_methods {
 ** following this call.  The second parameter may be a NULL pointer, in
 ** which case the new setting is not reported back. </dd>
 **
+** <dt>SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION</dt>
+** <dd> ^This option is used to enable or disable the [sqlite3_load_extension()]
+** interface independently of the [load_extension()] SQL function.
+** The [sqlite3_enable_load_extension()] API enables or disables both the
+** C-API [sqlite3_load_extension()] and the SQL function [load_extension()].
+** There should be two additional arguments.
+** When the first argument to this interface is 1, then only the C-API is
+** enabled and the SQL function remains disabled.  If the first argment to
+** this interface is 0, then both the C-API and the SQL function are disabled.
+** If the first argument is -1, then no changes are made to state of either the
+** C-API or the SQL function.
+** The second parameter is a pointer to an integer into which
+** is written 0 or 1 to indicate whether [sqlite3_load_extension()] interface
+** is disabled or enabled following this call.  The second parameter may
+** be a NULL pointer, in which case the new setting is not reported back.
+** </dd>
+**
 ** </dl>
 */
 #define SQLITE_DBCONFIG_LOOKASIDE             1001 /* void* int int */
 #define SQLITE_DBCONFIG_ENABLE_FKEY           1002 /* int int* */
 #define SQLITE_DBCONFIG_ENABLE_TRIGGER        1003 /* int int* */
 #define SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER 1004 /* int int* */
+#define SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION 1005 /* int int* */
 
 
 /*
@@ -5511,9 +5529,18 @@ SQLITE_API int SQLITE_STDCALL sqlite3_table_column_metadata(
 ** should free this memory by calling [sqlite3_free()].
 **
 ** ^Extension loading must be enabled using
-** [sqlite3_enable_load_extension()] prior to calling this API,
+** [sqlite3_enable_load_extension()] or
+** [sqlite3_db_config](db,[SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION],1,NULL)
+** prior to calling this API,
 ** otherwise an error will be returned.
 **
+** <b>Security warning:</b> It is recommended that the 
+** [SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION] method be used to enable only this
+** interface.  The use of the [sqlite3_enable_load_extension()] interface
+** should be avoided.  This will keep the SQL function [load_extension()]
+** disabled and prevent SQL injections from giving attackers
+** access to extension loading capabilities.
+**
 ** See also the [load_extension() SQL function].
 */
 SQLITE_API int SQLITE_STDCALL sqlite3_load_extension(
@@ -5536,6 +5563,17 @@ SQLITE_API int SQLITE_STDCALL sqlite3_load_extension(
 ** ^Call the sqlite3_enable_load_extension() routine with onoff==1
 ** to turn extension loading on and call it with onoff==0 to turn
 ** it back off again.
+**
+** ^This interface enables or disables both the C-API
+** [sqlite3_load_extension()] and the SQL function [load_extension()].
+** Use [sqlite3_db_config](db,[SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION],..)
+** to enable or disable only the C-API.
+**
+** <b>Security warning:</b> It is recommended that extension loading
+** be disabled using the [SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION] method
+** rather than this interface, so the [load_extension()] SQL function
+** remains disabled. This will prevent SQL injections from giving attackers
+** access to extension loading capabilities.
 */
 SQLITE_API int SQLITE_STDCALL sqlite3_enable_load_extension(sqlite3 *db, int onoff);