Next in Review Queue: The New std.path

[dsimcha]

Lars Kyllingstad's new and improved std.path module for Phobos is the 
next item up in the review queue.  I've volunteered to be the review 
manager.  Barring any objections, the review starts now and ends at the 
ends two weeks from now on July 28.  This will be followed by a week of 
voting, ending August 4th.

Code:
https://github.com/kyllingstad/phobos/blob/std-path/std/path.d

Docs:
http://www.kyllingen.net/code/new-std-path/phobos-prerelease/std_path.html

Author's comments -- please read before reviewing:

First of all, note that I have rewritten almost everything from scratch.
Mainly, this is because there are a lot of corner cases which aren't
handled correctly by the current std.path, and in the end rewriting
turned out to be easier than updating.  (Check out the unittests; they
cover all the cases I could think of.)  The only functions I have kept
unchanged from the current std.path are pathCharMatch (formerly
fncharmatch), glob (formerly fnmatch) and expandTilde.

Secondly, I hope you will find the new function names to be both more
descriptive, more consistent and more in line with current Phobos
conventions.  They are the result of a (rather informal) round of
discussion and voting in this forum a few months ago (which I hope you
will consider before suggesting new names):

http://www.digitalmars.com/d/archives/digitalmars/D/Proposal_for_std.path_replacement_131121.html

Thirdly, I have applied @safe, pure and nothrow wherever possible.
There were cases where this was not possible, either due to bugs in DMD
(specifically, 5304, 5700 and 5798) or due to functions in other Phobos
modules not being properly marked with these attributes.  I have marked
these with //TODO comments and will fix them as soon as possible.

And finally, due to the deprecated: block at the bottom of the module,
this version should be backwards compatible with the current std.path
for a while yet.