7191662: JCE providers should be located via ServiceLoader
Summary: Enhanced to use ServiceLoader and switched provider to Provider.Service model.
Reviewed-by: mullan, alanb, mchung

7106773: 512 bits RSA key cannot work with SHA384 and SHA512
Reviewed-by: weijun

6943119: Rebrand source copyright notices
Reviewed-by: darcy, weijun

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