Lots of strangely packaged extensions

[guillep]

There a lots of extensions that override methods belonging to another package.

ms := Smalltalk allClassesAndTraits gather: #methods.
es := ms select: #isExtension.

senders := Dictionary new.

es := es select: [ :e | | esenders |
	esenders := senders at: e selector ifAbsentPut: [ e selector senders ].
	esenders anySatisfy: [ :s | s package ~= e package ]
].

es select: [ :e | e overriddenMethods anySatisfy: [ :overridden | overridden package ~= e package ] ]

This yields a set of 169 extension methods.

For example, see asInteger in Boolean and subclasses.

Here, Boolean>>asInteger is in the kernel but redefined from FFI.
In this case, we should package all those three methods together in FFI.