Samples directory

[Brad Roberts]

Would anyone be interested in taking on the task of looking at the existing
samples and modernizing them?  Some should likely be junked as not terribly
educational examples.  Likely more should be added to illustrate other best
practices.

They can be found here:

  http://www.dsource.org/projects/phobos/browser/samples/d

Arguably they need to be versioned along with each branch of the language, so
assume they'll be moved to:

  http://www.dsource.org/projects/phobos/browser/branches/phobos-1.x/samples

and

  http://www.dsource.org/projects/phobos/browser/trunk/samples

I see no good reason to keep the 'd' part of the directory name, it's not like
the dmd .zip files are going to suddenly start shipping other languages.

See also:
 http://d.puremagic.com/issues/show_bug.cgi?id=2613

- Brad