Port fix for Html.ValidationSummary when model binding a collection

[sebastienros]

Bug: #4989

[sebastienros]

/cc @dougbu

[Eilon]

@sebastienros @dougbu hmm did we miss this for 1.0.1? Should we try to get this into 1.0.2?

cc @danroth27

[dougbu]

I double-checked the rel/1.0.1 branch and e5cb6f9 is definitely not included. So, yes, we missed it for 1.0.1.

Looks like the issue never got assigned. Agree we should aim for 1.0.2.

[Eilon]

Yay, our first MVC 1.0.2 bug 😄

[Eilon]

@dougbu this patch is approved, please ensure it is merged into the correct branch and building as part of the patch train.