Worth squeak changes

Here is a list of features that we should avoid to reinvent/reimplement.
If you want to help there is space.

Stef


**** already in the bugtracker => TextDiffBuilder
> ---------------
> A new algorithm for producing text diffs has been added. The algorithm is smaller, faster, and provides better results compared to the previous implementation.
>

**** we should have a look  => Source / Changes Files
>
> ----------------------
> Sources and changes files are no longer limited to 32MB max size. ExpandedSourceFileArray provides an implementation for source files of arbitrary length, based on the CompiledMethodTrailer changes.
>

**** already in Pharo => CompiledMethodTrailer

In general we should have a look at ToolBuilder improvements
> Morphic
> -------
> New window resizers better in tone with the general UI look. A new UserDialogBoxMorph for simple modal inform/confirm dialogs.
>


**** we should have a look  => Files
>
> -----
> StandardFilestream now performs read-buffering, dramatically speading up some operations like "Object compileAll" (2x improvement) as well as various other operations (scanning change lists etc).
>

**** we should have a look  => Numbers
>
> -------
> Implementations for Float #predecessor, #successor etc. Update to the compact class indexes of LargePositiveInteger and LargeNegativeInteger for Cog. Additional tests for all of the new features.
>
> **** already in Pharo  => Exceptions
> ----------
> OutOfMemory has been added as a standard exception being signaled when an allocation fails, replacing the previous signaling of the low space semaphore.


**** we should have a look  =>
> Improved #ensure: performance avoiding remote context manipulation (via #tempAt:put:) in the default case.
>
> SUnit
> -----
> Faster execution by speeding up some low level operations (like allTestSelectors). Fixes for thumbnail creation which would leave open morphs around after some tests.
>


**** Martin is working on that I imagine   => Kernel
>
> ------
> The default hash for all objects is now a scaled identity has to avoid extreme degradations in speed when using large numbers of objects without explicit hash implementation in Dictionary and Set.
>
> [------------------------- updated 11/28/09 ---------------------------]
>
> Menu Bar
> --------
> Squeak now has a standard menu bar to make it easier to discover its contents for new users, replacing the World menu as the prime source for launching tools and other activities.


> **** from pharo =>  Compiler
> --------
> Support for literal ByteArray syntax has been added. Byte arrays can now be written as #[1 2 3 "..."] instead of #(1 2 3) asByteArray  avoiding the need for conversion and a more compact default representation.
>

> *** in pharo => Numbers
> -------
> Some prime related changed: Integer>>isPrime is now a deterministic test, Integer>>isProbablyPrime a probabilistic variant. Intger>>highBit and Integer>>lowBit have been sped up significantly.
>

*** in pharo => CRLF Handling
>
> -------------
> CR and LF are now treated interchangeably in rendering. Both cause a line break and both are not displayed. Various line related methods have been updated to deal with both CR and LF.
>


> Collections
> -----------
> Dictionary is no longer a subclass of Set. HashedCollection is the new superclass for both Set and Dictionary.

***Normally in pharo but not sure
> Conversion of OrderedCollection and SortedCollection to Arrays has been sped up significantly.
>
>






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