Quick and compatible solution to avoid explicit linkage in C libs

[Alexander Kluev <akluev@...>]

Another quick and backward compatible solution to avoid explicit linkage in C libs is passing path to lua*.dll as a second arg to luaopen_*

So it will be posible avoid static linkage and use dynamic linking to current lua*dll instead.
Old method will also work.

for example

void luaopen2_mylib(lua_State *L, const wchar_t *lua_dll) // new luaopen2_ signature for two args function
{
    HMODULE h = LoadLibraryW(lua_dll); // load actual lua.dll

// obtain api 
    dll_pushnumber = GetProcAddress(h, "lua_pushnumber");
    dll_pushcclosure = GetProcAddress(h, "lua_pushcclosure");
    // ...

// use api
    dll_pushnumber(L, 3.14);
}

for statick linkage just use old luaopen_ signature