File utilities for streaming uploads

[theseion]

This PR accompanies SeasideSt/Seaside#1196.

[theseion]

The one failure is due to an unexpected pass. This should be fixed in a separate PR.

[theseion]

This PR also deals with the issue discussed in #1159. This might not be the best solution.

[jbrichau]

Hi @theseion !
Thanks for picking this one up again.

I wonder if it would not be easier (and keep the codebase more succint) to write binaryWriteStreamOn:do: in terms of the existing writeFileStreamOn: aString do: aBlock binary: aBoolean method? Is it because passing through the filename instead of the filereference does not work for this? The advantage is also we have some tests for the existing methods.

[theseion]

You're right, the new method is unnecessary. I've removed it.

[jbrichau]

@theseion the unexpected pass is indeed because svenvc/zinc#86 is now fixed in Pharo10. I now removed it in ce61d53

[jbrichau]

I would say we need a test for the new method.
But I will take care of it before marking a new release and merge this one in for now so we can merge the Seaside PRs

[theseion]

Thanks, much appreciated!