[Dillo-dev] use C locale for LC_CTYPE

If you've been following along on fltk.general, you'll know we've been in discussion over some unpleasantness regarding Turkic locales and strcasecmp/toupper/tolower where 'i' and 'I' are different letters. ( http://en.wikipedia.org/wiki/Dotted_and_dotless_I ) The typical solution is to make sort of ASCIIfied versions where you force i<->I. I think that, for our purposes, we can just use the ordinary POSIX locale and save ourselves the trouble. To see this behaviour: export LC_ALL=tr_TR and then look at: <span style="font-size: 0.5IN">these letters should be big</span> <p> <I>This text should be italic</I>