cmake NALU_HAVE_GIT_INFO examples

NaluCFD/Nalu CMakeLists.txt :120 

option(NALU_HAVE_GIT_INFO "Git version tagging for Nalu" ON)

Exawind/nalu-wind CMakeLists.txt :235 

option(NALU_HAVE_GIT_INFO "Git version tagging for Nalu" ON)