Fix of

"Unicode char like for example "ł" crush app when used in profile name"
https://github.com/prusa3d/Slic3r/issues/388

The Prusa3D binary builds are missing the UTF8 libraries.
To avoid having to bundle them, the case sensitive regexes testing
file suffixes were replaced with explicit enumeration of lower / upper
case letters. While crude, it avoids triggering the UTF8 library.

lib/Slic3r/Config.pm

@@ -101,7 +101,9 @@ sub load {
     my $class = shift;
     my ($file) = @_;
 
-    if ($file =~ /\.gcode$/i || $file =~ /\.g$/i) {
+    # Instead of using the /i modifier for case-insensitive matching, the case insensitivity is expressed
+    # explicitely to avoid having to bundle the UTF8 Perl library.
+    if ($file =~ /\.[gG][cC][oO][dD][eE]/ || $file =~ /\.[gG]/) {
         my $config = $class->new;        
         $config->_load_from_gcode($file);
         return $config;