Description:
------------
The __CLASS__ magic constant behaves very differently for closures defined in a trait.
It seems to use the bound scope class for the closure rather than the class which it was actually used in.

You can see the current behaviour here:
http://3v4l.org/WIK1E#v540

This can get even more unintuitive when using normal methods and reflection to get them as a closure seen here: 
http://3v4l.org/EhVlW#v540

Considering traits are are essentially copy and pasted into the used class, would it not be more correct to use the class in which it was used in instead?

Expected result:
----------------
Before bind: 
__CLASS__ in class: 
string(17) "ClassConstantTest"
__CLASS__ in Trait: 
string(17) "ClassConstantTest"

After bind: 
__CLASS__ in class: 
string(17) "ClassConstantTest"
__CLASS__ in Trait: 
string(17) "ClassConstantTest"

Actual result:
--------------
Before bind: 
__CLASS__ in class: 
string(17) "ClassConstantTest"
__CLASS__ in Trait: 
string(17) "ClassConstantTest"

After bind: 
__CLASS__ in class: 
string(17) "ClassConstantTest"
__CLASS__ in Trait: 
string(8) "stdClass"