Merge branch 'issue/intel_compiler_compatibility' into 'master'

Martin Nolterequested to merge
cherry-pick-99d1dc26 into releases/2.6

added 'using namespace' inside generic lambdas to workaround an intel compiler bug

See merge request !432 (merged)

(cherry picked from commit 99d1dc26)

5213992f added 'using namespace' inside generic lambdas to workaround an intel compiler bug

Merge request reports