Older automake (travis, *cough*) do not support the
AM_EXTRA_RECURSIVE_TARGETS option, this results in invoking "it-local"
directly in the travis script which relies on an implementation detail.
Since the "it" target is only used by the integration-tests directory,
just avoid the recursive targets. The README.rst suggests to enter the
integration-tests directory anyway.
`go test` requires both config.go and the test files in the same
directory. For out-of-tree builds, config.go is normally not placed next
to the source files, so copy the tests to the build directory as a
workaround.