put variable-sized types at the end of structs
put variable-sized types at the end of structs

fixes #63

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