While fixing 5054615 et al. I noticed two methods whose generic types are
overly restrictive:

    java.security.cert.X509CRLSelector.setIssuerNames(Collection<Object>)
    java.text.AttributedString.addAttributes(Map<Attribute,Object>, int, int)

The Object types in these signatures should be replaced with a wildcard so that
collections and maps of more specific types can be used.

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