cad/librnd: Update 4.3.1 => 4.3.2

Minor bugfix release with strong focus on polybool2. Notable changes:
- Polybool2: started implementing low level arc support
- 'make test' race condition fixes when used with -j
- extensions in libuirc (due to its reuse in the new web IRC client)

Changelog:
http://www.repo.hu/projects/librnd/releases/changelog-4.3.2.txt

* Small linting and sorting entries

PR:		285507
Approved by:	hasdalcodes@gmail.com (maintainer, timeout > 3 weeks)