Missing changes file for 3f683aadcd03c311c1

Looks like I forgot to commit this.

changes/bug12392

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+  o Minor bugfixes (testing, Windows):
+    - Avoid passing an extra backslash when creating a temporary
+      directory for running the unit tests on Windows. Fixes bug 12392;
+      bugfix on 0.2.2.25-alpha. Patch from Gisle Vanem.