Provide libraryPermittedPath to android runtime

Opening native libraries in isolated namespaces is limited to
the search-path (librarySearchPath). The libraryPermittedPath allows
to expand the list of allowed directories for isolated namespaces.

Bug: http://b/22548808
Bug: http://b/25853516
Change-Id: Id229be7760c3c47b7307452493bbb8bdf3faabb7
5 files changed