Self indulge in some ghetto so user threads do not need to call sys_exit() and can directly return a value.
Self indulge in some ghetto so user threads do not need to call
sys_exit() and can directly return a value.


git-svn-id: fb278a52ad97f7fbef074986829f2c6a2a3c4b34@375 c25cc9d1-44fa-0310-b259-ad778cb1d433

zhouxh1023/newos,siraj/newos,siraj/newos,travisg/newos,travisg/newos,zhouxh1023/newos,siraj/newos,zhouxh1023/newos,dioptre/newos,dioptre/newos,travisg/newos,dioptre/newos,siraj/newos