Uploaded language-env 0.64

I applied a patch for Polish language from Robert Luberda (Thanks). This will be final for Sarge.
As post sarge issue, I'm thinking a new structure about multilingual environment:

• Separated configuration files. Create ~/.language-env.d/ and put files for each feature configurations.
• Introduce "im-switch". Tagoh, Gotom, and I are working for new input method structure "im-switch", inspired from FedoraCore. I was writing proposal draft, but too late for Sarge and I'm too busy at now. Gee. This structure saves users from difficult choice and configuration of various input methods.