Merge topic 'bin2c'

3dd49d857a ci: Enable bin2c large file test on some builds
3a893806bb cmake -E: Add bin2c mode
8cca26e562 cm::optional: Suppress GCC -Wmaybe-uninitialized false positive

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Acked-by: Brad King <brad.king@kitware.com>
Merge-request: !11536