4.0b fixed

[Luiz Henrique de Figueiredo <lhf@...>]

The package lua-4.0-beta.tar.gz in the official sites has been updated
with the patches below. The constructor bug is being looked into.
We thank Philip Yi for finding these bugs and supplying fixes.
--lhf

lgc.c: 155c155
<       return ismarked(clvalue(o)->mark);
---
>       return ismarked(clvalue(o));

lvm.c: 123c123
<     const TObject *h = luaH_get(L, hvalue(t), t+1);
---
>     const TObject *h = luaH_get(L, hvalue(t), L->top-1);