The attached CS does the following:
	- Makes it possible to do:
		someObject when: #something evaluate: (MessageSend ...)
	- Removes a couple of unused methods from WeakActionSqeuence
	- Adds Object>>removeActionsSatisfying:

Stef said on 5 October:

> I do not understand why you remove the method 
> WeakActionSequence removeSelector: #isReceiverOrAnyArgumentGarbage
> while you need it 
> WeakActionSequence>>isValid
>	^self isReceiverOrAnyArgumentGarbage not

Because WeakActionSequence>>isValid is never called.
The attached CS removes it too.

> the changes seems simple even if I do not understand how there are
> related to the impossibility to do 
>	"Fixes a bug that makes it impossible to say:
>	someObject when: #something evaluate: (MessageSend ...)"

This was because MessageSend didn't understand #isValid.














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