ddox-generated Phobos documentation is available for review

[Andrei Alexandrescu]

Consider it alpha quality. Please don't announce yet before we put it in 
good shape.

https://github.com/D-Programming-Language/dlang.org/pull/516
http://dlang.org/library

http://dlang.org/library-prerelease

I needed to change quite a bit about the makefile. It was building 
everything over and over again, and it's _slow_.

Some functions are not ready, compare e.g.

http://dlang.org/library/std/algorithm/balancedParens.html

with

http://dlang.org/library/std/algorithm/any.html


Andrei