removed mmap from blacklist

[goffi-contrib]

mmap was blacklisted, but it is actually useful, e.g. to communicate
between a frontend and a service.
This patch remove it from blacklists.

[AndreMiras]

Thanks,
I've never played with mmap so I can't tell, @tito you initially blacklisted a bunch including mmap in 2b02324 can you review/merge if it's OK?
In the meantime @goffi-contrib can you simply rebase on master so CI is happy? The idea is to make a full CI run to make sure the recipes compile. Here the CI stopped because of the linter.

[tito]

I guess it was removed because it didn't compile for android at the time. If it works today, it can be included yep.

[AndreMiras]

Thanks for the feedbak tito.
Well then @goffi-contrib if you only rebase on master so we can check Travis is happy we're good to merge

[goffi-contrib]

@AndreMiras done :)

[AndreMiras]

Looking good thanks!