Description:
------------
token_get_all() displays an old set of constants, not the current 5.3 ones.
For instance, T_NS_SEPARATOR is not defined.
Thus, the symbol \ is not recognized by the tokenizer (UNKNOWN), and namespaced PHP code is not correctly parsed by token_get_all()

---
PHP Version 5.3.0alpha4-dev
Build date:Dec 27 2008 22:05:04 

Reproduce code:
---------------
foreach(token_get_all('<? namespace A\B\C;?>') as $c)
{
    if(is_array($c))
    {
        print(token_name($c[0]))."\n";
    }
}

Expected result:
----------------
T_OPEN_TAG
T_WHITESPACE
T_NAMESPACE
T_WHITESPACE
T_STRING
T_NS_SEPARATOR
T_STRING
T_NS_SEPARATOR
T_STRING
T_CLOSE_TAG


Actual result:
--------------
T_OPEN_TAG
T_WHITESPACE
T_NAMESPACE
T_WHITESPACE
T_STRING
UNKNOWN
T_STRING
UNKNOWN
T_STRING
T_CLOSE_TAG