remove -fsigned-char from s390 to fix smoketest..
remove -fsigned-char from s390 to fix smoketest..

Change-Id: I66c468e917513cdb096937f9955eb8a41aabaa37

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