pull up r22280 from trunk

pull up r22280 from trunk

 ------------------------------------------------------------------------
 r22280 | raeburn | 2009-04-25 05:36:11 -0400 (Sat, 25 Apr 2009) | 9 lines
 Changed paths:
    M /trunk/src/lib/kadm5/admin.h
    M /trunk/src/tests/misc/Makefile.in
    M /trunk/src/tests/misc/deps
    A /trunk/src/tests/misc/test_cxx_kadm5.cpp

 ticket: 6477
 subject: make installed headers C++-safe
 target_version: 1.7
 tags: pullup

 Now that we're installing the kadm5 headers, they should be C++-safe
 like the others.  Wrap the content in 'extern "C"' if compiling as
 C++.  New test program to verify.

ticket: 6477
version_fixed: 1.7

git-svn-id: svn://anonsvn.mit.edu/krb5/branches/krb5-1-7@22329 dc483132-0cff-0310-8789-dd5450dbe970