D-dll support: testers needed round 2

[Benjamin Thaut]

My work on dll support for D continues. There is another 
iteration I need help testing with.

Getting started tutorial: 
http://stuff.benjamin-thaut.de/D/getting_started.html
The DIP can again found be here: 
https://github.com/Ingrater/DIPs/blob/ReviveDIP45/DIPs/DIP45.md
The DIP is not up to date. The tutorial is more recent. If the 
DIP and the tutorial contradict each other trust the tutorial. 
Its still useful to read the dip for context, especially as how 
to use "export" in code.

This time around the shared version of phobos should have all 
required symbols exported. This means when you link against the 
shared version of phobos and find a linker error, please report 
that here. Ideally with a reduced repro case.

A binary distribution is provided, see the tutorial for details.