Fix integration test on JRuby 1.7
Fix integration test on JRuby 1.7

In JRuby 1.7, java.lang.Exception objects do not descend from
Exception, which broke this spec.  It seems very odd to me, but
this is going to be JRuby's documented behavior going forward,
so the spec should be adjusted.

reubano/sequel,uhoh-itsmaciek/sequel,seeARMS/sequel,knut2/sequel,mpalmer/sequel,yazshel/sequel,freshpay/sequel,nicohvi/sequel,t-morgan/sequel,Marketcircle/sequel,offshore-safety/sequel,mpalmer/sequel,t-morgan/sequel,bigfix/sequel,freshpay/sequel,reubano/sequel,chef/sequel,pfarrell/sequel,davidbegin/sequel,offshore-safety/sequel,beni55/sequel,dennis-d/custom_sequel,seeARMS/sequel,yazshel/sequel,nju520/sequel,dennis-d/custom_sequel,knut2/sequel,gferguson-gd/sequel,nicohvi/sequel,beni55/sequel,uhoh-itsmaciek/sequel,davidbegin/sequel,gferguson-gd/sequel,offshore-safety/sequel,pfarrell/sequel,nju520/sequel