Changing the signature of 'lua_resetthread' broke ABI.

lua.c assumes that argv has at least one element.
Lua can generate wrong code when _ENV is <const>.
Wrong code generation for constants in bitwise operations.
Lua-stack overflow when C stack overflows while handling an error.
'lua_settop' may use a pointer to stack invalidated by 'luaF_close'.
'break' may not properly close variable in a 'for' loop.
GC not setting a proper target for next cycle after a full collection in generational mode.
'utf8.codes' does not raise an error on spurious continuation bytes.
C-stack overflow with deep nesting of coroutine.close.
Wrong line in error message for arithmetic errors.
Loading a corrupted binary file can segfault.