[PHP-DOC] build date lost

[Hojtsy Gabor]

Hi!

The <pubdate>&php.build-date;</pubdate> part in
the bookinfo.xml means that the manual building date
should be there in all the generated manuals.

*But they are not!*

I tried to investigate some things in connection
with this entity and the pubdate element, but found
nothing...

Why are the dates missing? They are important parts
of the documentation!

Goba