Description:
------------
Namespaces are not supported in type hints. Type hints with namespace result in an "Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM".

Reproduce code:
---------------
<?php

namespace foo;

class bar {}

class blubb
{
    public function __construct( bar $bar ) {}
}

new blubb( new bar() );

Expected result:
----------------
No error.

Actual result:
--------------
Catchable fatal error: Argument 1 passed to foo::blubb::__construct( ) must be an instance of bar, instance of foo::bar given, called in ns_test.php on line 17 and defined in ns_test.php on line 11