Various Improvements #2717

Job	Run time
ubuntu-clang-deprecated Debug	21m 28s
ubuntu-clang-deprecated Release	22m 34s
ubuntu-clang-quaternions Debug	21m 16s
ubuntu-clang-quaternions Release	22m 52s
ubuntu-clang-tbb Debug	24m 7s
ubuntu-clang-tbb Release	24m 35s
ubuntu-clang-cayleymap Debug	20m 58s
ubuntu-clang-cayleymap Release	22m 50s
ubuntu-clang-system-libs Debug	21m 8s
ubuntu-clang-system-libs Release	22m 38s
ubuntu-no-boost Debug	21m 37s
ubuntu-no-boost Release	22m 34s
ubuntu-no-unstable Debug	17m 40s
ubuntu-no-unstable Release	18m 32s
	5h 4m 49s

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