[Rpm-maint] [rpm-software-management/rpm] RFE: pass parametric macro options and arguments to Lua natively (#1092)

[Panu Matilainen]

We can't pass NULL's in middle of ARGV_t, but that gave me an idea...

What we could do is pass pass options and a table and the arguments as another, and prepend this to the anonymous Lua chunk from C side:
```
opt = select(1, ...)
arg = select(2, ...)
```

Which I think makes it all really nice on the Lua side:
```
%foo(a:b) %{lua
    if opt.b
        print('do b')
    if opt.a
        print('a value: '...opt.a)
    for i in ipairs(i, arg) do
        print(i, arg)
    end

    --- also these would work
    if opt['b']:
        print('do b')
    print('first arg'..argv[1])
}
```

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