[boost] [modularization] Moving <boost/math/common_factor_ct.hpp> to TypeTraits

Hi, |moving boost/math/common_factor_ct.hpp to TypeTraits would remove the dependency from Interprocess, Pool and Variant to Math. | /interprocess/ http://www.pdimov.com/tmp/report-6d1f271/interprocess.html || * from || /pool/ http://www.pdimov.com/tmp/report-6d1f271/pool.html || * from || /variant/ http://www.pdimov.com/tmp/report-6d1f271/variant.html || || * from || Vicente