[PATCH] msvcp90: Add codecvt<wchar_t>::do_encoding that returns 0

[Piotr Caban]

On 04/06/16 18:51, Daniel Lehman wrote:
> seems to be only msvcp90 that returns 1
>
> all others return 0 (which seems more correct anyway)
Msvcp100 behaves the same as msvcp90. Please also update codecvt_short 
virtual functions table.

Thanks,
Piotr