'uses-library' was not working for persistent applications.
Fix by generating the applicationInfo, when asked for info.

Change-Id: I44686d5a306562c6649148dce8f709e682adcdf4
diff --git a/services/java/com/android/server/PackageManagerService.java b/services/java/com/android/server/PackageManagerService.java
index 86504a0..cc78300 100644
--- a/services/java/com/android/server/PackageManagerService.java
+++ b/services/java/com/android/server/PackageManagerService.java
@@ -1861,7 +1861,7 @@
                         && (p.applicationInfo.flags&ApplicationInfo.FLAG_PERSISTENT) != 0
                         && (!mSafeMode || (p.applicationInfo.flags
                                 &ApplicationInfo.FLAG_SYSTEM) != 0)) {
-                    finalList.add(p.applicationInfo);
+                    finalList.add(PackageParser.generateApplicationInfo(p, flags));
                 }
             }
         }