do not second-guess the location of mingw sysroot
do not second-guess the location of mingw sysroot

Change-Id: I669b6c7b90f2b803f68df86704b357967481f6ce

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