add suite.pm for oqgraph suite;fix suite.opt

mysql-test/suite/oqgraph/include/have_oqgraph_engine.inc

-disable_query_log;
---require r/true.require
-select (PLUGIN_LIBRARY LIKE 'oqgraph_engine%') as `TRUE` from information_schema.plugins where PLUGIN_NAME='OQGRAPH';
-enable_query_log;

mysql-test/suite/oqgraph/suite.opt

+--plugin-load=$OQGRAPH_ENGINE_SO

mysql-test/suite/oqgraph/suite.pm

+package My::Suite::OQGraph;
+
+@ISA = qw(My::Suite);
+
+return "No OQGraph" unless $ENV{OQGRAPH_ENGINE_SO};
+
+bless { };
+

mysql-test/suite/oqgraph/t/basic.test

--- source suite/oqgraph/include/have_oqgraph_engine.inc
-
 drop table if exists graph;
 
 CREATE TABLE graph (

mysql-test/suite/oqgraph/t/binlog.test

--- source suite/oqgraph/include/have_oqgraph_engine.inc
 -- source include/have_log_bin.inc
 
 --disable_warnings

mysql-test/suite/oqgraph/t/suite.opt

---plugin-load=$GRAPH_ENGINE_SO