[squeak-smalltalk/squeak-object-memory] Avoid growth when filling large collections (Issue #160)

marceltaeumel created an issue (squeak-smalltalk/squeak-object-memory#160)

When filling large collections, we have `new:` to set the expected capacity and `new:withAll:` to also define the objects to put in.

However, as we do not expose a collection's growth strategy, the use of `new:` gets tricky if one wants to avoid extra growth at all cost, e.g., when having millions of things.

The growth strategy is hidden within a collection's implementation.

A client would have to expose a best guess to avoid growth:

```Smalltalk
bigDatabase := IdentityDictionary new: allObjects size * 4 // 3 + 16.
```

Here `numObjects * 4 // 3 + 16` is that guess. Maybe we want to offer a `newForSizeNoGrow:`.

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