- original freqmine defined a stack * list, which makes reference to
list ambigiuous, update: change all stack * list -> flist.
- threadmanger constructor: the original accept int (*funcname)(int) for
the first argument, xuan's new version use void (*funcname)(int)
(functions: sc2_parallel()), this trigger a error, so I add return 0 and
set to return int for that function.