Branch b1_6

b=14135
i=nathan
i=huanghua

Original "mgc_logname2resid" process both "logname" (which consists of fsname-nodetype)
and "fsname", it can not distinguish "-" contained fsname and the logname.
Split it into two functions: "mgc_logname2resid" and "mgs_fsname2resid" for that.