[www-doc] refactoring Makefile.inc

[Christoph Miebach]

Hello!

May I change

-------------
PHP_FILES := download-* index features libvlc screenshots skineditor 
skineditor_update \
              skins skins_upload streaming \
              index.fr index.de index.ru index.tr index.hi index.cs 
index.he \
[...]
-------------

into

-------------
PHP_FILES := download-* index features libvlc screenshots skineditor 
skineditor_update \
              skins skins_upload streaming \
              index.fr   download-windows.fr    download-macosx.fr  \
              index.pt   download-windows.pt    download-macosx.pt  \
[...]
-------------

?

I think, this will enable alphabetical sorting and will make adding more 
languages much easier.

Regards

Christoph