[ruboto][regression] Increased stack usage

Hello good people!

You are great and make the world a better place! Thank you!

As mentioned to headius on IRC, we have noticed an increase in stack usage when embedding JRuby using RedBridge. A common use case as described by

https://github.com/ruboto/ruboto-core/blob/master/test/activity/stack_activity.rb

changes behavior when changing JRuby version as described by

https://github.com/ruboto/ruboto-core/blob/master/test/activity/stack_activity_test.rb

Stack is currently the most pressing resource limitation when using Ruboto, and it would be really beneficial if there was a way to reduce stack usage.

Currently

https://github.com/ruboto/ruboto-core/blob/master/test/activity/option_menu_activity.rb

and

https://github.com/ruboto/ruboto-core/blob/master/test/activity/option_menu_activity_test.rb

fail on master due to stack level too deep.

To reproduce check out ruboto-core and run

ruby test/ruboto_gen_test.rb -n test_activity_tests

The file to adjust to new stack level values is

test/activity/stack_activity_test.rb