Add ASAN and UBSAN stages to CI, fix various errors [AP-1386] #1461

Job	Run time
ASAN	9m 17s
Test Big Endian	9m 38s
Bazel	13m 25s
macOS	37m 32s
Ubuntu 18.04 (Build: Debug, Compilers: gcc-6/g++-6, Shared Library: true)	15m 33s
UBSAN	9m 54s
Ubuntu 18.04 (Build: Debug, Compilers: clang-6.0/clang++-6.0, Shared Library: true)	14m 28s
Ubuntu 18.04 (Build: Debug, Compilers: clang-6.0/clang++-6.0, Shared Library: false)	14m 24s
Ubuntu 18.04 (Build: Release, Compilers: gcc-6/g++-6, Shared Library: true)	22m 52s
Windows 2019 (Generator: MinGW Makefiles, Shared Library: true)	28m 20s
Ubuntu 18.04 (Build: Release, Compilers: gcc-6/g++-6, Shared Library: false)	22m 24s
Windows 2019 (Generator: MinGW Makefiles, Shared Library: false)	29m 17s
Ubuntu 18.04 (Build: Release, Compilers: clang-6.0/clang++-6.0, Shared Library: true)	20m 30s
Ubuntu 18.04 (Build: Release, Compilers: clang-6.0/clang++-6.0, Shared Library: false)	19m 45s
Windows 2019 (Generator: Visual Studio 16 2019, Shared Library: true)	9m 0s
Windows 2019 (Generator: Visual Studio 16 2019, Shared Library: false)	10m 49s
	4h 47m 8s

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