Prevent failing on filenames with backticks
Allow names and paths with accents

Changed LC_ALL to en_US.utf-8
Respect system locale

Should work in any locale now
Merge pull request #47 from rafaelmuylaert/patch-1

Fix issues that affected files with accents and international characters in their names.

 * Improve sed escaping of accents
 * Use $LANG setting for sorting instead of "C", if $LANG is set