[D-runtime] New committers for druntime, phobos, dpl.org, and tools repos

[Alex Rønne Petersen]

Hi folks,

I'd like to propose giving the following people commit rights to the
druntime, phobos, dpl.org, and tools repos:

* David Nadlinger (https://github.com/klickverbot)
* Dmitry Olshansky (https://github.com/blackwhale)
* Iain Buclaw (https://github.com/ibuclaw)
* Vladimir Panteleev (https://github.com/CyberShadow)

Please send an off-list email my way with your vote/thoughts.

Thanks!

Regards,
Alex