std.path review: update

[Lars T. Kyllingstad]

On Sun, 17 Jul 2011 17:43:42 -0400, bearophile wrote:

> Lars T. Kyllingstad:
> 
>> I believe I have covered most of your requests, with a few exceptions:
> 
> compatibleStrings is a template still.

I know.  Sorry, forgot to mention that.  For now, I'd like to keep it the 
way it is.  I can't find any precedence in Phobos for turning these kinds 
of tests into CTFEable functions, and if compatibleStrings were to end up 
in std.traits, for instance, it would stand out as being different from 
everything else in there.  If it is decided that it is better to write 
these tests as ordinary functions, that should probably be done 
throughout Phobos.

-Lars