keyserver if no URL is available.
* w32installer.nsi: Added page to select the language.
* mk-w32-dist: Create the opt.ini using the available languages.
initialization.
* gpgv.c (i18n_init) [W32]: Ditto.
* simple-gettext.c (set_gettext_file): Use MO files depending on
the installation directory. Add new arg REGKEY.