Add check for messenger home relative to startup script.

git-svn-id: http://svn.igniterealtime.org/svn/repos/messenger/trunk@103 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/messenger/JiveGlobals.java

@@ -713,6 +713,19 @@ public class JiveGlobals {
             if (messengerHome == null) {
                 messengerHome = System.getProperty("messengerHome");
             }
+
+            if(messengerHome == null){
+                try {
+                    messengerHome = new File("..").getCanonicalPath();
+                    if(!new File(messengerHome, "conf/jive-messenger.xml").exists()){
+                        messengerHome = null;
+                    }
+                }
+                catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+
             // If still null, finding messengerHome failed.
             if (messengerHome == null) {
                 failedLoading = true;