Added a copy constructor to ECCPublicKey and and fucntions to build or store it from a byte array.

Change-Id: Ibd07f62501e7600d29130c470d2f45bda76ac7b9
Signed-off-by: Meggan Ehret <meggan@qeo.org>
Merge "Added a copy constructor to ECCPublicKey and and fucntions to build or store it from a byte array." into feature/security2.0