Remove conditional, since results are always an instance of `ActiveRecord::Result`
Fix multidimensional PG arrays containing non-string items
use `skip` so we can see what tests are not run
Merge pull request #11331 from vipulnsward/remove_conditional

Remove conditional, results are always an instance of `ActiveRecord::Result`
cast hstore values on write to be consistent with reading from the db.
Set field encoding to client_encoding for mysql adapter.
Merge pull request #11802 from ko1/fix_field_encoding_for_mysql

Set field encoding to client_encoding for mysql adapter.