Finalized CI refactoring #390

Job	Run time
Windows-2019 [arch x64, toolset v142, backend botan, build shared libs off, use CMake prefix path on]	1h 3m 22s
Windows-2019 [arch x64, toolset v142, backend botan, build shared libs off, use CMake prefix path off]	1h 14m 24s
Windows-2019 [arch x64, toolset v142, backend openssl, build shared libs off, use CMake prefix path on]	26m 30s
Windows-2019 [arch x64, toolset v142, backend openssl, build shared libs off, use CMake prefix path off]	30m 18s
Windows-2019 [arch x64, toolset ClangCL, backend botan, build shared libs off, use CMake prefix path on]	1h 10m 49s
Windows-2019 [arch x64, toolset ClangCL, backend botan, build shared libs off, use CMake prefix path off]	59m 28s
Windows-2019 [arch x64, toolset ClangCL, backend openssl, build shared libs off, use CMake prefix path on]	23m 40s
Windows-2019 [arch x64, toolset ClangCL, backend openssl, build shared libs off, use CMake prefix path off]	24m 27s
Windows-2019 [arch Win32, toolset ClangCL, backend botan, build shared libs off, use CMake prefix path on]	1h 24m 8s
Windows-2019 [arch Win32, toolset v142, backend openssl, build shared libs off, use CMake prefix path off]	28m 4s
	8h 5m 10s

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