6687 Change KRB5_AUTHDATA_SIGNTICKET from 142 to 512
6689 krb5_typed_data not castable to krb5_pa_data on 64-bit MacOSX
6690 MITKRB5-SA-2010-002 CVE-2010-0628 denial of service in SPNEGO
+6693 Fix backwards flag output in krb5_init_creds_step()
Major changes in 1.8
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