Merge pull request #432 from kronbichler/master

Bugfix of has_ghost_elements() of parallel vector

diff --cc doc/news/changes.h
index 309dedfb975ec9fa7353c6c13370f9a990fa887a,9a24a6574acaf9c75c9860d579be4da345b98b2b..880aafa1b63a10068b05967f6108fb9adf96a9dc
--- 1/doc/news/changes.h
--- 2/doc/news/changes.h
+++ b/doc/news/changes.h
@@@ -179,9 -179,18 +179,18 @@@ inconvenience this causes
  <h3>Specific improvements</h3>
  
  <ol>
+   <li> Fixed: The update of ghost values in parallel::distributed::Vector when
+   calling the assignment operator is now active when one of the two vector had
+   its ghost values updated before or when the layout of the right hand side
+   vector is one-to-one, more consistent with parallel PETSc and Trilinos
+   vectors.
+   <br>
+   (Martin Kronbichler, 2015/01/13)
+   </li>
+ 
    <li> New: PETScWrappers::MPI::SparseMatrix::reinit(other) copies
    the layout of another matrix. TrilinosWrappers::SparseMatrix
 -  operator= and copy constructor are now disabled. This brings 
 +  operator= and copy constructor are now disabled. This brings
    functionality between PETSc and Trilinos in line.
    <br>
    (Timo Heister, 2015/01/12)