To make the code more manageable, intl.h now contains wxLocale and
translation.h all translations-related stuff (wxTranslations, _() etc.).
Code generated by genlang.py was moved into its own files (language.h,
languageinfo.cpp).
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64118 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
