Description:
------------
Samuel pointed out this "feature" on the php-windows mailing list:
http://marc.info/?t=127981502400008&r=1&w=2
this "feature" bit many people (see the bug reports, the comments on 
language.oop5.static.php), so I think we should add this behaviour to the 
documentation:

http://php.net/manual/en/language.oop5.static.php
"Because static methods are callable without an instance of the object
created, the pseudo-variable $this is not available inside the method
declared as static."

"Calling non-static methods statically generates an E_STRICT level warning."

We should add that the non-static methods can be called via the scope resolution 
operator (aka the static way) but in this case the method will have access to 
the caller method's scope and an E_STRICT warning will be raised.

Test script:
---------------
<?php
class A{

 public $foo = 'bar';

 public function write(){

   print($this->foo);

 }

}


class B{

 public $foo = 'gnagnagna';



 public function write(){

  A::write();

 }

}


$var = new B;

$var->write();

Expected result:
----------------
PHP Fatal error:  Using $this when not in object context in...
OR
Change in the documentation to describe this kind of behaviour.

Actual result:
--------------
gnagnagna