allow suite.pm to skip combinations that originate from test/include files.

storage/innobase/handler/handler0alter.cc:
  for NEWDATE key_type says unsigned, thus col->prtype says unsigned,
  but field->flags says signed. Use the same flag for value retrieval
  that was used for value storage.

mysql-test/suite/innodb/t/innodb_bug53674.test

@@ -1,4 +1,5 @@
 -- source include/have_log_bin.inc
+-- source include/have_innodb.inc
 
 create table bug53674(a int)engine=innodb;
 insert into bug53674 values (1),(2);