pull up r25385 from trunk

pull up r25385 from trunk

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 r25385 | ghudson | 2011-10-20 11:16:03 -0400 (Thu, 20 Oct 2011) | 9 lines

 ticket: 6988
 subject: Fix handling of null edata method in KDC preauth
 target_version: 1.10
 tags: pullup

 Correctly include an empty padata value if a KDC preauth system has no
 get_edata method.  This bug prevented the KDC from indicating FAST
 support in preauth-required errors.

ticket: 6988
version_fixed: 1.10
status: resolved

git-svn-id: svn://anonsvn.mit.edu/krb5/branches/krb5-1-10@25389 dc483132-0cff-0310-8789-dd5450dbe970