migrate from im-switch to im-config

[Ma Xiaojun]

On 10/25/12 6:49 PM, Gunnar Hjalmarsson wrote:
> im-switch (unlike im-config) provides per display language
> configuration, which you are able to set from language-selector.
> Considering that there is a plan to replace language-selector with the
> g-c-c region capplet, so far we have sticked with im-switch even if it's
> deprecated.

I personally feel that per language IM configuration is useless.
Mac OS X doesn't have this "feature".
Even we stick with current language-selector dialog, we can decouple 
language selection and IM configuration easily I guess.