fixed a bug in set_matrix_mode.

STSetMatMode shall be called only after transformation_data->st
is initialised. Thus, we need to store the desired STMatMode
untill set_context is called from the solver object.
Merge pull request #246 from davydden/set_matrix_mode

fixed a bug in set_matrix_mode.
Proof read the changelog file.
Merge pull request #255 from bangerth/changelog-fixes

Proof read the changelog file.
Enable vectorization of vector updates in Chebyshev preconditioner

Use DEAL_II_OPENMP_SIMD_PRAGMA annotation. To avoid a bug in gcc, use an additional
boolean in the 'if' statement that avoids checking factor1 == Number().
Re-fill comments in precondition.h
Merge pull request #252 from kronbichler/master

Enable vectorization of vector updates in Chebyshev preconditioner
Implement rotation for vector valued dofs on periodic bc

This commit completes the interface for periodic boundary conditions. It
exposes the interpolation matrix (that is internally used to satisfy
hanging node constraints on periodic boundaries) and provides a possibility
to generate it from a rotation matrix and an index for the vector component
in question (in a similar vein as we already do this for different vector
valued finite elements).

Signed-off-by: Matthias Maier <tamiko@kyomu.43-1.org>
add accompanying tests

Signed-off-by: Matthias Maier <tamiko@kyomu.43-1.org>
Add a changelog entry
Fix undefined symbol in MPI::MinMaxAvg without MPI, commit 97bd7e2.
Merge pull request #257 from kronbichler/master

Fix undefined symbol in MPI::MinMaxAvg without MPI, commit 97bd7e2.
fix comments and style issues
Merge pull request #256 from tamiko/branch_periodic_bc

Implement rotation for vector valued dofs on periodic bc
ritento
gitignore
riprovo
2d periodic boundary cond implemented
2d periodic boundary cond implemented