can't see callstack of luajit pcall

[冶晶邓 <fatfatson@...>]

today i finally managed to move my project to luajit2-beta8, with a lot of modifies...

everything seems ok, but only feeling unhappy without callstack in MSVC debug,

i think it's caused by the lp_vm.obj generated unnormally by the buildvm program,

but i know nothing about that magic thing...

so how can i get the callstack shown in the MSVC debugger? thanks very much!