Enabling Proguard to reduce APK size.

MyTracks/default.properties

@@ -11,4 +11,5 @@
 split.density=false
 # Project target.
 target=Google Inc.:Google APIs:9
+proguard.config=proguard.cfg
 android.library.reference.1=../MyTracksLib/

MyTracks/proguard.cfg

@@ -1,3 +1,4 @@
+-target 6
 -optimizationpasses 5
 -dontusemixedcaseclassnames
 -dontskipnonpubliclibraryclasses
@@ -5,9 +6,18 @@
 -verbose
 -optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
 
+# Add the libraries, but ignore warnings about them
+-libraryjars libs
+-libraryjars ../MyTracksLib/libs
+-dontwarn com.google.android.googleapps.**
+-dontwarn com.android.common.**
+-dontwarn com.google.android.gsf.**
+
+# Keep everything android references from XMLs
 -keep public class * extends android.app.Activity
 -keep public class * extends android.app.Application
 -keep public class * extends android.app.Service
+-keep public class * extends android.app,backup.BackupAgent
 -keep public class * extends android.content.BroadcastReceiver
 -keep public class * extends android.content.ContentProvider
 -keep public class com.android.vending.licensing.ILicensingService