[development] Remove PHP filter by default

[Karoly Negyesi]

Hi!

A good read is http://www.webschuur.com/node/409 . Some points I do not  
care of, but:

1) As Drupal moves forward, upgrading PHP nodes is cumbersome at best.  
(blocks are easier to be found)
2) The security aspect. PHP filter is just too powerful. I can debate to  
death that it's safe now, no matter what -- the mere presence of PHP  
filter will make baby Rasmus cry :D

However, it's true that defining a whole module is more complicated than a  
php node. Is it? I submitted a patch http://drupal.org/node/46857 which  
adds an 587 bytes module to core which lets you save a PHP into  
something.inc and then view it at the path pages/something. It just can't  
be simpler.

Also, defining a block is more difficult than just using a snippet. Is it?  
No. The necessary module is a lot complicated this time, 690 bytes :) .

Kind regards

Karoly Negyesi