Changed BOOST_AUTO_TC_REGISTRAR to BOOST_AUTO_TU_REGISTRAR, to reflect changes in Boost 1.35.  Unit tests now compile.
Changed BOOST_AUTO_TC_REGISTRAR to BOOST_AUTO_TU_REGISTRAR, to reflect changes in Boost 1.35.  Unit tests now compile.

acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core