make SwClientIter construcatable only from SwIter
make SwClientIter construcatable only from SwIter

Change-Id: I6e203792187311f3d00fd074fd67cbae7680723e

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