cmake HAVE_MARCH_NATIVE examples

HDFGroup/hdf5 config/cmake/ZLIBNG/CMakeLists.txt :313

check_c_compiler_flag(-march=native HAVE_MARCH_NATIVE)

InsightSoftwareConsortium/ITK Modules/ThirdParty/HDF5/src/itkhdf5/config/cmake/ZLIBNG/CMakeLists.txt :284

check_c_compiler_flag(-march=native HAVE_MARCH_NATIVE)

InsightSoftwareConsortium/ITK Modules/ThirdParty/ZLIB/src/itkzlib-ng/CMakeLists.txt :277

check_c_compiler_flag(-march=native HAVE_MARCH_NATIVE)