Shuffle glossary: the ManifoldId entry was in the wrong place.
Move an entry to the correct place. A couple of minor updates.
Fix bug in TrilinosVector::sadd with MPI

As pointed out by Praveen C on the mailing list, sadd() of the Trilinos vector did
not work properly when combining ghosted with non-ghosted vectors. The test supposed
to check this used two vectors with the same entries, which did not detect that the
wrong vector was scaled.
Merge pull request #178 from bangerth/shuffle-changelog

Move an entry to the correct place. A couple of minor updates.
Merge pull request #176 from bangerth/shuffle-glossary

Shuffle glossary: the ManifoldId entry was in the wrong place.
Merge pull request #174 from kronbichler/master

Fix bug in TrilinosVector::sadd with MPI
Allow Q(p) and DGQ(r) elements to touch each other in hp::DoFHandlers.

The thing is that the FE_DGQ is discontinuous anyway, so there can't be any constraints to begin with.
Merge pull request #175 from bangerth/fix-q-vs-dgq

Allow Q(p) and DGQ(r) elements to touch each other in hp::DoFHandlers.
CMake: Bugfix: Replace all "-" by "_" for some internal variable name

ENABLE_IF_SUPPORTED incorrectly exported invalid (cpp) macro definitions
containing a dash "-". Fix this by replacing all dashes with underscores
"_".
CMake: Bugfix: Correctly detect unsupported flags in case of clang

The clang compiler frontend is very conservative in not issuing an error
for unsupported compile flags but that are valid for gcc. Therefore, also
supply "-Werror" for the clang compiler in all 'ENABLE_IF_SUPPORTED' tests.
Add a configure time check for a bug in icc

icc-14*, icc-15* does not play nicely with enabled -std=c++11 and
boost::signals2, disable C++11 support in this case.

[1] https://software.intel.com/en-us/forums/topic/515966
Merge pull request #179 from tamiko/cmake_bugfixes

This is a series of small bugfixes for clang and icc configuration:
comment on spurious eigenvalues in Step-36
Reindent and fix the issues discussed in the original pull request.
Rename a couple of variables and extend discussion.
Extend discussion about spurious eigenvalues.
Add a changelog entry.
Merge pull request #180 from bangerth/comment-on-spurious-eigenvalues

Comment on spurious eigenvalues
Add BOOST.fusion as apparently we need that in boost/math/special_functions/erf.hpp.
Add a test to avoid this problem from happening again in the future.