Improve mysql-test-run for catalogs

As part of the catalog project, mtr has been enhanced with the new option:
--catalog ; Run all test with a server initialized with catalog support. Catalog 'def' is used.

The option "--use-catalog=name" has been added. The purpose of this is to create a new catalog "name" and run all possible tests in it:

• Create a catalog directory structure with directories 'def' and 'name'
• User data in 'name'
• Add '--catalog=name' option to mysqltest
• Run mysqltest with --catalog=name
  Note that replication test has to be modified so that the setup replication as setup in the 'def' catalog and then we switch to catalog 'name' for the rest of the tests.

One of the purpose of this task is to get --catalog_name to work.
Another purpose is to add more tests in suite/catalogs to test all catalog specific features.