Add -DENABLE_MULTIARCH_x86_POPCNT #213

Job	Run time
linux_clang (ubuntu-latest, Debug)	3m 20s
windows_mingw64 (windows-latest, Debug)	5m 3s
linux_clang (ubuntu-latest, Release)	1m 16s
linux_gcc_sanitizers	2m 18s
windows_mingw64 (windows-latest, Release)	2m 43s
linux_gcc (ubuntu-latest, Debug)	4m 35s
linux_gcc (ubuntu-latest, Release)	2m 13s
linux_gcc_valgrind	1m 28s
macos_clang (macos-latest, Debug)	1m 41s
windows_msvc2022	2m 14s
macos_clang (macos-latest, Release)	53s
	27m 44s

Provide feedback