patch: extract fs access from patchfile into fsbackend Most filesystem calls are already isolated in patchfile but this is not enough: renames are performed before patchfile is available and some chmod calls are even done outside of the applydiff call. Once all these calls are extracted into a backend class, we can provide cleaner APIs to write to a working directory context directly into the repository. [ original upstream message ]

Merge with stable

run-tests: replace chdir() with Popen cwd option [ original upstream message ]

run-tests: make --debug run in the temporary test directory [ original upstream message ]

run-tests: use the common test path on Windows and Java The alternate one did not run in the test directory and controlling the jobs execution with threads instead of process made it harder to fix. [ original upstream message ]

run-tests: ignore timeout when Popen.terminate is unavailable Popen.terminate was introduced in python 2.6 [ original upstream message ]