remove unused parameter passed to assert_query_equal method
Allow pass multipart option to form_for
Merge pull request #9745 from madmax/allow_pass_multipart_to_form_for

Fix regression: allow pass multipart option to form_for
Merge pull request #9757 from vipulnsward/remove_message_param

remove unused parameter passed to assert_query_equal method
Fix rake test warnings in actionpack
Merge pull request #9754 from macksmind/fix_actionpack_warnings

Fix rake test warnings in actionpack
sets limit 191 for schema_migrations#version in mysql2 if the encoding is "utf8mb4"

Please, see rationale in the included CHANGELOG patch.
`rake db:create` does not change permissions of root user.

Closes #8079.

I had to rework some of the tests because the mock allowed any arguments
for `connection.exeucte`. I think this is very dangerous as there could
anything be executed without the tests noticing it.