Fix targetSdkVersion, make resize mode a flag, delayed dexopt, easy ApplicationInfo.

- Fix a bug where targetSdkVersion could not be set if minSdkVersion.  Stupid, stupid.
  Also make sure to fail if minSdkVersion is for a code name.  Really stupid.

- Change the API for resize compatibility mode to be a bit in the flags field, instead
  of a separate boolean.

- Implement delayed dexopting, to avoid the looong full dexopt during boot.  This is
  only enabled for "eng" builds.  When in this mode, the activity manager will make
  sure that a dexopt has been done before loading an .apk into a process, and will
  try to avoid displaying ANRs if they are due to the dexopt causing some operation
  to take longer than it normally would (though I make no guarantees about this
  totally working).

- Add API to Context to get the ApplicationInfo for its package, for easy access to
  things like targetSdkVersion.
diff --git a/core/java/android/content/pm/IPackageManager.aidl b/core/java/android/content/pm/IPackageManager.aidl
index 5656b6b..b33a85b 100644
--- a/core/java/android/content/pm/IPackageManager.aidl
+++ b/core/java/android/content/pm/IPackageManager.aidl
@@ -301,4 +301,11 @@
     boolean isSafeMode();
     void systemReady();
     boolean hasSystemUidErrors();
+    
+    /**
+     * Ask the package manager to perform dex-opt (if needed) on the given
+     * package, if it already hasn't done mode.  Only does this if running
+     * in the special development "no pre-dexopt" mode.
+     */
+    boolean performDexOpt(String packageName);
 }