cc_ccache_set_kdc_time_offset
err = cc_ccache_set_kdc_time_offset(ccache, cc_credentials_v5, time_offset);
#ifndef cc_ccache_set_kdc_time_offset
#ifdef cc_ccache_set_kdc_time_offset
err = cc_ccache_set_kdc_time_offset(ccache, credentials_version, time_offset);
err = cc_ccache_set_kdc_time_offset(ccache, cc_credentials_v5, 0);
err = cc_ccache_set_kdc_time_offset (in_ccache,