type_traits for std::underlying_type
type_traits for std::underlying_type

Change-Id: Iad41da9294c9a38e501e5bcd1b3185f2e3b26ff2

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core