More client changes to remove the requirement that the server send mechanism information data along with the mechanism name in the auth.policy.

CASA-auth-token/non-java/client/mechanisms/krb5/internal.h

@@ -57,6 +57,7 @@ AuthTokenIf_GetAuthToken(
    IN       const void        *pIfInstance,
    IN       const char        *pContext,
    IN       const char        *pMechInfo,
+   IN       const char        *pHostName,
    IN       void              *pCredStoreScope,
    INOUT    char              *pTokenBuf,
    INOUT    int               *pTokenBufLen);