Add another priority queue test.
Add another priority queue test.

pinguo-xudianyang/beanstalkd,mickeyouyou/beanstalkd,handautsav/beanstalkd,justintung/beanstalkd,cgvarela/beanstalkd,Qihoo360/beanstalkd-win,mickeyouyou/beanstalkd,mobliyishengyuan/beanstalkd,JensRantil/beanstalkd,lzpfmh/beanstalkd,davies/beanstalkd,diditaxi/beanstalkd,naderman/beanstalkd,justintung/beanstalkd,LomoX-Offical/beanstalkd-win,ifduyue/beanstalkd,amyvmiwei/beanstalkd,tdg5/beanstalkd,aidaima/beanstalkd,r3jack/beanstalkd,pinguo-xudianyang/beanstalkd,yetone/beanstalkd,potatosalad/beanstalkd,PhillipMwaniki/beanstalkd,wyzssw/beanstalkd,potatosalad/beanstalkd,wyzssw/beanstalkd,mobliyishengyuan/beanstalkd,aidaima/beanstalkd,yetone/beanstalkd,kr/beanstalkd,qbdsoft/beanstalkd,JensRantil/beanstalkd,wfxiang08/beanstalkd,cgvarela/beanstalkd,naderman/beanstalkd,CompendiumSoftware/beanstalkd,r3jack/beanstalkd,bmhatfield/beanstalkd,davies/beanstalkd,orangeholic/beanstalkd,kr/beanstalkd,wfxiang08/beanstalkd,Qihoo360/beanstalkd-win,qbdsoft/beanstalkd,bmhatfield/beanstalkd,tdg5/beanstalkd,amyvmiwei/beanstalkd,ifduyue/beanstalkd,diditaxi/beanstalkd,PhillipMwaniki/beanstalkd,naderman/beanstalkd,handautsav/beanstalkd,LomoX-Offical/beanstalkd-win,orangeholic/beanstalkd,lzpfmh/beanstalkd,CompendiumSoftware/beanstalkd