[SCons] Link boost_thread when building cti2ctml
[SCons] Link boost_thread when building cti2ctml

Fixes compilation errors with some versions of Boost.

git-svn-id: f739b9c67a9a799965e8669aabcec927791afe7c@2555 02a645c2-efd0-11dd-984d-ab748d24aa7e

Cantera/cantera-svn,Cantera/cantera-svn,Cantera/cantera-svn,Cantera/cantera-svn,Cantera/cantera-svn,Cantera/cantera-svn