[tlu] beta with texdist switching

[Adam R. Maxwell]

> On May 1, 2015, at 0:26, Bruno Voisin <bvoisin at icloud.com> wrote:
> 
> Also, still regarding the architecture, TLU doesn't seem to offer the choice between the two installed architectures (x86_64-darwin and universal-darwin), it only displays x86_64-darwin.

Correct; it only displays the option that the MacTeX installer set as default. The intent is to allow changing arch, but I may decide it's not worth it. I know I've never needed it.

thanks,
Adam