Merge branch 'gs/test-unset-xdg-cache-home' into maint

Test update. * gs/test-unset-xdg-cache-home: test-lib.sh: unset XDG_CACHE_HOME

Junio C Hamano committed Mar 22, 2018 at 14:24 UTC 8bfeb0e42c3358374dc8ab14369e4280d8b12f5c

No changes.