unittest_encoding: build without -fstrict-aliasing
unittest_encoding: build without -fstrict-aliasing

unittest_encoding gets "this breaks strict-aliasing" warnings when
compiled under Ubuntu. So don't crank up optimization on the unit test.

Signed-off-by: Colin McCabe <7b35906f1d014e74a9dc8c913eb229119df647aa@dreamhost.com>

ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph