Ignore-this: e5afeb833d0e0b0bf05ff5f497a3130d

Tests showed the old code was faster and I was too stupid to read the test results
rolling back:

Fri Jul 24 10:40:09 CEST 2009  Andreas Haerter <netzmeister@andreas-haerter.de>
  * Much faster version of utf8_isASCII()
  This version uses a non-capturing regular expression instead of looping through
  all characters of the string.

    M ./inc/utf8.php -5 +2

darcs-hash:20090725104459-7ad00-c4849ca67293083fee8021c2c198dab1dcb435a2.gz