[D-runtime] Commit messages

[Walter Bright]

Thanks everyone for all the pull requests!

Once again, I must remind everyone that the first line of commit messages should 
be of the form:

"fix Issue nnnn"

Otherwise, github/bugzilla will not recognize it.

The above method works. Remember, it's just a dumb regex pattern used to detect 
this. Messages like "fix for issue nnnn" do not work. "nnnn fix" does not work.