Local commit for mailbox
Merge remote branch 'origin/master'
update
update
update
del extra comment
fix up code formatting based on Gabe's suggestions
add memory protection code.
add mbox code (as_connector.c) and microbenchmark for mbox.
add refcnt to cbufp.
fix some bugs in mem_mgr and cbufp_mgr.
    add memory protection code.
    add mbox code (as_connector.c) and microbenchmark for mbox.
    add refcnt to cbufp.
    fix some bugs in mem_mgr and cbufp_mgr.
fix some runscripts
update some run scripts
Merge pull request #71 from ryuxin/master

Yuxin