Fixed up error output tests and added a missing failure output test.
Fixed up error output tests and added a missing failure output test.

Errors *should* output their stack. Somehow these tests were passing
before. This clarifies all states (skip/fail/error) and works against
@tenderlove's patch.

yalab/rails,starknx/rails,kmcphillips/rails,kmcphillips/rails,eileencodes/rails,lcreid/rails,BlakeWilliams/rails,yahonda/rails,Envek/rails,betesh/rails,vipulnsward/rails,Stellenticket/rails,Erol/rails,bogdanvlviv/rails,yawboakye/rails,lcreid/rails,starknx/rails,schuetzm/rails,yahonda/rails,rails/rails,repinel/rails,Edouard-chin/rails,BlakeWilliams/rails,starknx/rails,Edouard-chin/rails,joonyou/rails,tgxworld/rails,MSP-Greg/rails,EmmaB/rails-1,yalab/rails,vipulnsward/rails,repinel/rails,Envek/rails,Vasfed/rails,kddeisz/rails,Stellenticket/rails,tjschuck/rails,bogdanvlviv/rails,Vasfed/rails,eileencodes/rails,kddeisz/rails,yawboakye/rails,betesh/rails,betesh/rails,Vasfed/rails,MSP-Greg/rails,bogdanvlviv/rails,schuetzm/rails,rails/rails,schuetzm/rails,yahonda/rails,tjschuck/rails,georgeclaghorn/rails,Erol/rails,joonyou/rails,yahonda/rails,georgeclaghorn/rails,kmcphillips/rails,yawboakye/rails,BlakeWilliams/rails,betesh/rails,georgeclaghorn/rails,lcreid/rails,Edouard-chin/rails,BlakeWilliams/rails,MSP-Greg/rails,vipulnsward/rails,eileencodes/rails,yalab/rails,Envek/rails,bogdanvlviv/rails,EmmaB/rails-1,rafaelfranca/omg-rails,schuetzm/rails,Erol/rails,vipulnsward/rails,joonyou/rails,esparta/rails,rails/rails,kmcphillips/rails,lcreid/rails,rafaelfranca/omg-rails,MSP-Greg/rails,repinel/rails,tgxworld/rails,tjschuck/rails,repinel/rails,Edouard-chin/rails,eileencodes/rails,rails/rails,rafaelfranca/omg-rails,joonyou/rails,esparta/rails,yawboakye/rails,tjschuck/rails,Envek/rails,tgxworld/rails,Vasfed/rails,tgxworld/rails,kddeisz/rails,kddeisz/rails,esparta/rails,yalab/rails,georgeclaghorn/rails,Stellenticket/rails,Stellenticket/rails,EmmaB/rails-1,esparta/rails,Erol/rails