Clean up formatting of numbers in gpx export.

Addresses issue #299 and ensures Latitude and Longitude are formatted
correctly as well.

Also orders the elements in the waypoint correctly according to the
schema: <ele> and <time> need to come before <name> and <desc>.

MyTracksLib/src/com/google/android/apps/mytracks/lib/MyTracksLibConstants.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2010 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.google.android.apps.mytracks.lib;
+
+/**
+ * Constants for the My Tracks common library.
+ * These constants should ideally not be used by third-party applications.
+ *
+ * @author Rodrigo Damazio
+ */
+public class MyTracksLibConstants {
+  public static final String TAG = "MyTracksLib";
+
+  private MyTracksLibConstants() {}
+}