Fix sepolicy-analyze libc++.so loading issue w/CTS.

Addresses the following error when running CTS on master:
junit.framework.AssertionFailedError: The following errors were encountered when validating the SELinuxneverallow rule:
neverallow { appdomain -bluetooth } self:capability *;
/tmp/SELinuxHostTest5593810182495331783.tmp: error while loading shared libraries: libc++.so: cannot open shared object file: No such file or directory

Also indicate that none of the sepolicy tools need c++ std lib.

(cherry-pick of 0cdb0517be696c0dc6882d289eedd45bf2da918c now made possible by
addition of commit: 28b72eddd54cb1287dd7daae853e8e4b78fa17eb)

Bug: 19617220
Change-Id: I2c5b7ab1ddeb0e02cbaad2b7d5430a0974524a89