#33 Update CL_CertGroup*Bundle functions to support CRLs

[Michelle M. Manning]

The problem is that there is no way to input CRLs to be placed into the bundle using CSSM_CL_CertGroupToSignedBundle nor is there a way to return CRLs extracted from a bundle using CSSM_CL_CertGroupFromVerifiedBundle.

There may also be additional information that should be supplied or extracted from bundles in addition to certificates and CRLs.

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