imm32: Use the PostMessageW for WM_IME_NOTIFY message.

[Dmitry Timoshkov]

"Byeong-Sik Jeon" <wjsqudtlr at gmail.com> wrote:

> We have to call PostMessage to send WM_IME_NOTIFY message.
> To send WM_IME_CONTROL, we use SendMessage, but WM_IME_NOTIFY is not...
> 
> changelog:
>    Use the PostMessageW for WM_IME_NOTIFY message.

Aric just changed the code to use SendMessage for WM_IME_NOTIFY message.
Sounds like it's time to write some message tests or look at the existing
ones (which confirm that WM_IME_SETCONTEXT and WM_IME_NOTIFY are sent, not
posted).

-- 
Dmitry.