Fall back to --hash-style=sysv when gnu is not supported
Fall back to --hash-style=sysv when gnu is not supported

Based on patch by Francois Tigeot <ftigeot at wolfpond dot org>

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