Various Improvements #2740

Job	Run time
ubuntu-clang-deprecated Debug	21m 39s
ubuntu-clang-deprecated Release	22m 46s
ubuntu-clang-quaternions Debug	22m 24s
ubuntu-clang-quaternions Release	24m 4s
ubuntu-clang-tbb Debug	22m 30s
ubuntu-clang-tbb Release	25m 1s
ubuntu-clang-cayleymap Debug	21m 25s
ubuntu-clang-cayleymap Release	23m 4s
ubuntu-clang-system-libs Debug	21m 42s
ubuntu-clang-system-libs Release	22m 28s
ubuntu-no-boost Debug	21m 18s
ubuntu-no-boost Release	22m 28s
ubuntu-no-unstable Debug	17m 0s
ubuntu-no-unstable Release	18m 8s
	5h 5m 57s

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