The default namespace for system process now becomes isolated, which
means it can load only the libs that are in search.paths and under
permitted.paths.
/system/framework, /system/app, /system/priv-app, /vendor/app, /data,
etc are added to the permitted paths since libart should be able to
dlopen odex files under the locations.
Following directories become unavailable:
/system/lib/vndk
/system/lib/vndk-sp
Bug: 37013858
Bug: 64888291
Bug: 64950640
Test: 2017 pixel devices builds and boots
Test: android.jni.cts.JniStaticTest#test_linker_namespaces passes
Change-Id: I2bbe9cc19940c3633c2fb901f9bf8ab813e38c13
55f05d79f9