tests/__init__.py keeps a run offline, its scratch under tmp/ and its
installer cache its own, but only discover -s tests -t . imported it.
discover tests ran with RETROBIOS_OFFLINE unset, scratch on the /tmp
tmpfs and the user's real installer cache, the setting in which e2e
fixtures had written into the shared .cache/large. Every test module now
imports the package first, and a test fails on a module that does not.
test_verify_listing.py took its line with the previous commit.
emulator: carried the file stem on 67 profiles, so site links read like ids. Each now takes the project's own name (libretro .info corename, README title, window title or site title). tests/test_profile_names.py allows the stem only on a commented list: lowercase project names, test cores, aliases and the template.
Abdessamad Derraz