WL#3008: information_schema . engines

Affects: Server-5.1   —   Status: Complete   —   Priority: Very High

Make a metadata table INFORMATION_SCHEMA.ENGINES. 
 
The column names (ENGINE, SUPPORT, COMMENT, 
TRANSACTIONS, XA, SAVEPOINTS) and contents 
are the same as for SHOW ENGINES. 
 
 
Done in 5.1.5.