make sure jars load in consistent order

alphabetical sort, case sensitivity of path names depends on platform

src/java/org/jivesoftware/openfire/starter/JiveClassLoader.java

@@ -25,6 +25,7 @@ import java.io.FilenameFilter;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.net.URLClassLoader;
+import java.util.Arrays;
 
 /**
  * A simple classloader to extend the classpath to
@@ -70,6 +71,9 @@ class JiveClassLoader extends URLClassLoader {
             return;
         }
 
+        // sort jars otherwise order differs between installations (e.g. it's not alphabetical)
+        // order may matter if trying to patch an install by adding patch jar to lib folder
+        Arrays.sort(jars);
         for (int i = 0; i < jars.length; i++) {
             if (jars[i].isFile()) {
                 addURL(jars[i].toURI().toURL());