Add the ability to disable the omit-join-table optimization for testing
purposes.

FossilOrigin-Name: d929df9b1ba214c27d8c437099a53ee9b07aa169
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 731612d..0a66193 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -1024,6 +1024,7 @@
 #define SQLITE_OrderByIdxJoin 0x0080   /* ORDER BY of joins via index */
 #define SQLITE_SubqCoroutine  0x0100   /* Evaluate subqueries as coroutines */
 #define SQLITE_Transitive     0x0200   /* Transitive constraints */
+#define SQLITE_OmitNoopJoin   0x0400   /* Omit unused tables in joins */
 #define SQLITE_AllOpts        0xffff   /* All optimizations */
 
 /*