- Made sure Informix style decimal vars are initialized. They use a

fixed amount of digits and not an allocated one. So we have to work
  around. PostgreSQL numeric type remains the same.
- In INFORMIX_SE mode with autcommit set, make all cursors be "with
  hold". Is this really they way SE behaves?

src/interfaces/ecpg/test/num_test.pgc

@@ -8,7 +8,7 @@ main()
 	char *text="error\n";
 	Numeric *value1, *value2, *res;
 	exec sql begin declare section;
-		decimal(14,7) des = {0, 0, 0, 0, 0, NULL, NULL} ;
+		numeric(14,7) des = {0, 0, 0, 0, 0, NULL, NULL} ;
 	exec sql end declare section;
 	double d;
 	FILE *dbgs;