pull up r22475 from trunk

pull up r22475 from trunk

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 r22475 | ghudson | 2009-07-30 15:06:37 -0400 (Thu, 30 Jul 2009) | 8 lines

 ticket: 6533
 tags: pullup
 target_version: 1.7

 Include <assert.h> in k5-platform.h, since we use assertions in some
 of the macros defined there, as well as in many source files which do
 not themselves include <assert.h>.  Report and fix by Rainer Weikusat.

ticket: 6533
version_fixed: 1.7.1
status: resolved

git-svn-id: svn://anonsvn.mit.edu/krb5/branches/krb5-1-7@22810 dc483132-0cff-0310-8789-dd5450dbe970