Port of libnoise to d

[Roderick Gibson]

>
> This is relevant to my interests, by "rough state", what do 
> mean exactly?

Well, for example, building currently just sprays a bunch of 
import files into a directory with no structure, making them 
useless without putting them into their directory structure. A 
couple of the modules had naming collisions with d reserved 
keywords (namely, module and const) and so I've renamed them 
temporarily until I can settle on a permanent name.

Finally, I can't get the Cache module to build at all (still 
don't know why), so I have it removed from the build. Other than 
that it seems to work just fine.