* Fix CFLAGS in the python3.x-config scripts. Closes: #992669, #989000.
* Support arc-linux-gnu in the multiarch header. Closes: #992091.
* Don't run the test_concurrent_futures test on alpha and sparc64. Closes: #991110.
* Fix path to mkdir on a unified-/usr system. Closes: #992775.
* Use command -v instead of which in shell scripts. Closes: #993413.