Commits
Jerome Soumagne committed c09876d30c5
test driver: add H5VL_TEST_CLIENT_HELPER_START_MSG to wait for helper to start add support for init tokens H5VL_TEST_CLIENT_INIT_TOKEN_REGEX and H5VL_TEST_CLIENT_INIT_TOKEN_VAR can be used to setup regular expression to find token expression from init program and set appropriate client env vars.