Bug#923545: Offer to prepare Ninja 1.9.0 package

[Gregor Jasny]

Hello Felix,

I'd like to help you with Ninja 1.9.0 packaging. Would you agree to me 
preparing ninja 1.9.0 on salsa?

Right now I'm taking care of of two packages: v4l-utils (10+ years) and 
c-ares.

Thanks,
Gregor