• Don't return immediately in check_xucred, check_scm_creds_cmsgcred, and check_scm_creds_sockcred after initial != NULL checks have been done for debugging purposes
• Use more terse names for bintime (bt), cmesgcred (cmcred), sockcred (sc), and timeval (tv) [*]
• Add some debug messages to better understand some of the flow of the test program

MFC after: 1 week
Requested by: bde [*]
Use of the word "terse" (^.^) corrected by: jhb, rpokala [*]
Sponsored by: EMC / Isilon Storage Division