Windows,test wrapper: export XML testlog envvar
Windows,test wrapper: export XML testlog envvar

With this change, the native test wrapper can run
more complicated tests.

Bash tests that do not rely on the rlocation
defined in test-setup.sh now work with the native
test wrapper.

Still missing:
- zipping up undeclared outputs
- passing command line arguments to test

See https://github.com/bazelbuild/bazel/issues/5508

Change-Id: If629392186e59dda5879124ed5c674b924420e77

Closes #6270.

Change-Id: If629392186e59dda5879124ed5c674b924420e77
PiperOrigin-RevId: 214932459

davidzchen/bazel,katre/bazel,werkt/bazel,akira-baruah/bazel,safarmer/bazel,dslomov/bazel-windows,katre/bazel,aehlig/bazel,perezd/bazel,meteorcloudy/bazel,cushon/bazel,bazelbuild/bazel,dslomov/bazel,werkt/bazel,meteorcloudy/bazel,akira-baruah/bazel,meteorcloudy/bazel,bazelbuild/bazel,ButterflyNetwork/bazel,ulfjack/bazel,twitter-forks/bazel,twitter-forks/bazel,perezd/bazel,perezd/bazel,dslomov/bazel,dslomov/bazel-windows,safarmer/bazel,safarmer/bazel,bazelbuild/bazel,dslomov/bazel-windows,ulfjack/bazel,ButterflyNetwork/bazel,cushon/bazel,dslomov/bazel,ButterflyNetwork/bazel,aehlig/bazel,dslomov/bazel,dslomov/bazel-windows,dslomov/bazel,aehlig/bazel,katre/bazel,bazelbuild/bazel,ulfjack/bazel,werkt/bazel,ulfjack/bazel,twitter-forks/bazel,akira-baruah/bazel,werkt/bazel,meteorcloudy/bazel,ButterflyNetwork/bazel,twitter-forks/bazel,akira-baruah/bazel,katre/bazel,davidzchen/bazel,dslomov/bazel,davidzchen/bazel,twitter-forks/bazel,meteorcloudy/bazel,cushon/bazel,katre/bazel,perezd/bazel,ulfjack/bazel,safarmer/bazel,katre/bazel,bazelbuild/bazel,safarmer/bazel,aehlig/bazel,akira-baruah/bazel,meteorcloudy/bazel,dslomov/bazel-windows,aehlig/bazel,davidzchen/bazel,cushon/bazel,bazelbuild/bazel,twitter-forks/bazel,safarmer/bazel,aehlig/bazel,ulfjack/bazel,werkt/bazel,aehlig/bazel,davidzchen/bazel,twitter-forks/bazel,perezd/bazel,cushon/bazel,davidzchen/bazel,perezd/bazel,perezd/bazel,davidzchen/bazel,ulfjack/bazel,cushon/bazel,ButterflyNetwork/bazel,ButterflyNetwork/bazel,meteorcloudy/bazel,werkt/bazel,akira-baruah/bazel,dslomov/bazel-windows,dslomov/bazel