dealii/dealii — pull request #26 by tamiko (2014-07-24 22:27:39+00:00)
Title: Add missing includes to step-17 and step-18

This commit fixes up a regression introduced with commit
06a70bad3cbbcbb6abc51e12f29e3b5dfffb928a
that removed unnecessary includes of base/multithread_info.h. Both steps
need them for multithread_info.n_threads()