Output

Output
  =====deal.II====3d====debug========== multigrid/multigrid.all_dimensions.cc
and alike lines atomically, if possible. This avoids screen clutter if
compiling with -jN, since otherwise the different parts of a line are
printed one after the other, and these different parts may be
intercepted by output from other make threads.

git-svn-id: https://svn.dealii.org/trunk@5896 0785d39b-7218-0410-832d-ea1e28bc413d