pull up r25417 from trunk

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 r25417 | ghudson | 2011-10-26 18:34:21 -0400 (Wed, 26 Oct 2011) | 7 lines

 ticket: 6993
 subject: Fix format string for TRACE_INIT_CREDS_SERVICE
 tags: pullup
 target_version: 1.9.2

 This should also be pulled up to 1.10.

https://github.com/krb5/krb5/commit/f5c837bb9dffa6d1d3449f4c7fad4be8e9a41c2a
Commit By: tlyu
Revision: 25458
Changed Files:
U   branches/krb5-1-9/src/include/k5-trace.h