Support bytestring-0.11.3.0

[tomsmeding]

Description

Uses CPP to remove a polyfill for takeWhile on ShortByteString, that was necessary before bytestring-0.11.3.0 but is now provided by the source package.

Motivation and context

Compatibility.

How has this been tested?

It builds here :)

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.

[dpvanbalen]

As far as I can see, the same Bytestring update also added "take", right?

[tomsmeding]

@dpvanbalen Thanks for having a look!

After personal communication, I updated the diff to what we agreed. Looks good?