Initialize native loader before starting runtime

Loading public libraries before everything else
to prevent situation when libssl.so gets into
libopenjdk.so load group which then prevented
from unloading by a global library referencing
the very same libssl.so

Bug: http://b/28449304
Change-Id: I3bbff3cc6926c2377ae5cb5b7b5b5d6e26ea4470
(cherry picked from commit c544f34b)