Merge branch 'p/gruenich/remove-CXX11-checks'

cmake/modules/CheckCXX11Features.cmake

cmake/modules/CheckSharedPtr.cmake

cmake/modules/DuneCommonMacros.cmake

cmake/modules/Makefile.am

config.h.cmake

doc/buildsystem/buildsystem.tex

dune/common/array.hh

dune/common/debugallocator.hh

dune/common/densematrix.hh

dune/common/documentation.hh

dune/common/dynmatrix.hh

dune/common/fmatrix.hh

dune/common/forloop.hh

dune/common/fvector.hh

dune/common/gcd.hh

dune/common/hash.hh

dune/common/lcm.hh

dune/common/mallocallocator.hh

dune/common/parallel/remoteindices.hh

dune/common/poolallocator.hh