cppunit: CXXFLAGS should be set only once
cppunit: CXXFLAGS should be set only once

Change-Id: I67e38db4b41849ac4be4ad20825391c84c7ed412

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