Incorrect returned values when v-table generation and virtual members are involved

[ddobrev]

To reproduce, add any virtual method to Qux in CSharpTemp.h; TestMultipleInheritance's going to fail at Assert.That(baz[0], Is.EqualTo(50)); .

[genuinelucifer]

@ddobrev @tritao I would like to work on this issue. I have reproduced it successfully. Please provide some guidance in this regard.

[ddobrev]

@genuinelucifer this one could be a little more difficult. Do you mind finishing #334, #383 and #402 first?

[genuinelucifer]

@ddobrev Perfectly fine. I will try to finish those first and then come to it. 👍

[ddobrev]

Fixed by 6f8c942.