Macro impl_from_tuples_for_inmemorydir

macro_rules! impl_from_tuples_for_inmemorydir {
    ($var1:ident $path1:ident $data1:ident, $($var:ident $path:ident $data:ident),+) => { ... };
    (__impl $($var:ident $path:ident $data:ident),+; $var1:ident $path1:ident $data1:ident $(,$var2:ident $path2:ident $data2:ident)*) => { ... };
    (__impl $($var:ident $path:ident $data:ident),+;) => { ... };
}

Extend impl_from_tuple_for_inmemorydir to generate for the specified tuple and all smaller tuples