ML Auto ISO module feat. EC on M (wip)

Created originally on Bitbucket by Marsu42

Changesets for this Pull Request have not been imported, because it had been already declined on Bitbucket. Marked as closed by the import user.

Beware, my next (and last) attempt to get this merged - seeing how crippled the Canon version is I cannot help but share my module with the ml community as a think you for the dev's work.

It requires some platform-specific getter functions in the core, and thus the module .mo cannot be used with an older autoexec.bin!

Discussion thread is here: http://www.magiclantern.fm/forum/index.php?topic=8688