tests: respect --outputdir for XML & coverage files
This is a backport of some changes I did to hg-git; in particular, it makes it easier to gather XML & Coverage reports across individual test runs as part of a pipeline.
All legacy (hg-git based) Projects have been automatically migrated to native with the upgrade of 2025-01-23
This is a backport of some changes I did to hg-git; in particular, it makes it easier to gather XML & Coverage reports across individual test runs as part of a pipeline.