Add specs verifying that no-such-method exceptions in `method_missing` do not include `method_missing` in the backtrace.
Add specs verifying that no-such-method exceptions in `method_missing` do not include `method_missing` in the backtrace.

eregon/rubyspec,ruby/rubyspec,ruby/spec,eregon/rubyspec,eregon/rubyspec,nobu/rubyspec,ruby/spec,ruby/rubyspec,ruby/spec,nobu/rubyspec,nobu/rubyspec