* Each element is then passed through os::internal_path() to
* guarantee that it is in the form of a unix-style path.
* If the environment variable is not set, then the function returns
* an empty vector.
* Each element is then passed through os::internal_path() to
* guarantee that it is in the form of a unix-style path.
* If the environment variable is not set, then the function returns
* an empty vector.