installer::download: Enable strict and warnings.
installer::download: Enable strict and warnings.

Change-Id: I4499968f00e313187ef7792954f3168bfadb2f6e

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