pull up r25480 from trunk, minus a non-applying manpage patch

pull up r25480 from trunk, minus a non-applying manpage patch

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 r25480 | ghudson | 2011-11-20 00:19:45 -0500 (Sun, 20 Nov 2011) | 13 lines

 ticket: 7021
 subject: Fix failure interval of 0 in LDAP lockout code
 target_version: 1.10
 tags: pullup

 A failure count interval of 0 caused krb5_ldap_lockout_check_policy to
 pass the lockout check (but didn't cause a reset of the failure count
 in krb5_ldap_lockout_audit).  It should be treated as forever, as in
 the DB2 back end.

 This bug is the previously unknown cause of the assertion failure
 fixed in CVE-2011-1528.

ticket: 7040
version_fixed: 1.9.3
status: resolved

git-svn-id: svn://anonsvn.mit.edu/krb5/branches/krb5-1-9@25513 dc483132-0cff-0310-8789-dd5450dbe970