Fixing readout of backslashes (conan-io#6301) (conan-io#6320)

* using git-bash to run Windows-bash tests (conan-io#6301)

* test only for Windows

* REMOVE: look for things in the CI

* fixing readout of backslashes (conan-io#6301)

* simplify test following review

* check if it works without moving paths to 'unix' style

* name the test, otherwise it won't run (facepalm)

* use unix-like paths

Co-authored-by: Javier G. Sogo <[email protected]>

Fix six

Fix six

Fix six

Fix six