This change fixes bug when $CURDIR contains special character e.g. '&&'. Change-Id: I658eb60d97c2229cf8b4e0a61dbbecf3edc9d573 Signed-off-by: Fangming.Fang <fangming.fang@arm.com> Upstream-commit: 83062593d7ce759bb96e271e30460afa4a695dba Component: engine