Fix some test script errors. And an incorrect assert() in fts5.

FossilOrigin-Name: f804336f083d8d26314bb1ba34cec427675065a67cbe2bf00bb42e40752aeb33

ext/fts5/fts5_main.c

@@ -280,7 +280,7 @@ static void fts5CheckTransactionState(Fts5Table *p, int op, int iSavepoint){
     case FTS5_SAVEPOINT:
       assert( p->ts.eState==1 );
       assert( iSavepoint>=0 );
-      assert( iSavepoint>p->ts.iSavepoint );
+      assert( iSavepoint>=p->ts.iSavepoint );
       p->ts.iSavepoint = iSavepoint;
       break;