cmake HAVE__STRTOUI64 examples

FujiNetWIFI/fujinet-firmware components_pc/libssh/ConfigureChecks.cmake :219

check_function_exists(_strtoui64 HAVE__STRTOUI64)

nih-at/libzip CMakeLists.txt :117

check_function_exists(_strtoui64 HAVE__STRTOUI64)

flyinghead/flycast core/deps/libzip/CMakeLists.txt :106

check_function_exists(_strtoui64 HAVE__STRTOUI64)