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/AndroidManifest.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+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.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+      package="com.google.android.apps.mytracks.lib"
+      android:versionCode="1"
+      android:versionName="1.0">
+  <!--
+     THIS IS A LIBRARY PROJECT.
+     See http://developer.android.com/guide/developing/eclipse-adt.html#libraryProject
+     for details on what should go here vs in the application project.
+  -->
+  <application android:icon="@drawable/arrow_icon"
+               android:label="@string/lib_name">
+  </application>
+  <uses-sdk android:minSdkVersion="3" />
+</manifest>