Fix for non-ascii las file names on linux
Fix for non-ascii las file names on linux

Pass UTF-8 through to fopen via liblas, rather than incorrectly
converting to latin1.  Unfortunately this won't work on windows - may
need to figure out how to convince liblas to take wide char filenames I
guess...

JoshChristie/displaz,JoshChristie/displaz,JoshChristie/displaz,JoshChristie/displaz,JoshChristie/displaz