Deactivate the library if vm version is 2.1 or newer.

It was decided that it would be the revision of multidex native support and
that it is the criterion that should be used to discriminate between VMs
capable of multidex and others.

Bug 14238145.

See bug 10447095 for discussions about the deactivation criterion.

Change-Id: I50922972d1d5b3019a111d5a1b4f2f18af9713ed