pull up r18896 from trunk

pull up r18896 from trunk

 r18896@cathode-dark-space:  coffman | 2006-12-01 14:36:38 -0500
 subject: send a new request with the new padata returned by krb5_do_preauth_tryagain()
 ticket: new
 Component: krb5-libs
 Target_Version: 1.6
 Tags: pullup

     Send another request containing the padata obtained from tryagain.

     * src/include/k5-int.h
     Update prototype

     * src/lib/krb5/krb/get_in_tkt.c
     Send pointer to the request.padata so krb5_do_preauth_tryagain()
     can update the request to be sent.

     * src/lib/krb5/krb/preauth2.c
     If a module returns modified padata, add it to the return_padata
     and return.

ticket: 4973
version_fixed: 1.6

git-svn-id: svn://anonsvn.mit.edu/krb5/branches/krb5-1-6@18903 dc483132-0cff-0310-8789-dd5450dbe970