Sort the result of FileSystem.list

This ensures fs.list and fs.find always return the same result.

For some reason, the ComputerCraft jar was being packaged differently on
some platforms, causing files to appear in a different order. As
computers depend on the colors API being loaded before colours, we need
to ensure that they are loaded in a consistent order.

src/main/java/dan200/computercraft/core/filesystem/FileSystem.java

@@ -10,7 +10,6 @@ import dan200.computercraft.api.filesystem.IMount;
 import dan200.computercraft.api.filesystem.IWritableMount;
 
 import java.io.*;
-import java.nio.charset.Charset;
 import java.util.*;
 import java.util.regex.Pattern;
 
@@ -441,6 +440,7 @@ public class FileSystem
         // Return list
         String[] array = new String[ list.size() ];
         list.toArray(array);
+        Arrays.sort( array );
         return array;
     }