Invalid keyword arguments should raise an error

[RobinMcCorkell]

Keyword arguments unsupported by the respective function should raise an error during parsing, not be silently ignored. A case where this would have made a big difference is the change from include_dirs to include_directories - existing code would fail during building after the Meson upgrade with no clear indication why.

[jpakkane]

Yes. This is fixed now.

I did the include_dirs change like this because, truth be told, I did not know of anyone using Meson for production yet. If I had known that I would have made the change so that they both are valid for a while with a deprecation warning if you use the old one.

[RobinMcCorkell]

While Meson is in alpha/beta, it is perfectly fine to make incompatible changes. I wouldn't say I'm exactly 'production', but I've started having a look at Meson as a next-gen build system, and I like what I see so far and want to help make it better 😄