[D-runtime] change 78, make files

[Brad Roberts]

A great step forward.. better than what I'd done (I was trying to make
minimal changes rather than overhauling) and matches what phobos has,
for the most part.

One concern.. the unit tests are based on release mode, which is rather
problematic.  Release mode disables asserts -- ie nothing is really
tested. :)

Sean, I'll re-look at my changes, but between this one and the change
you're already started on (getting the sync primitives to build) are all
I had, I think.

Later,
Brad