compute REX.B node index with bitwise or in ZydisNodeHandlerRexB #1182

Job	Run time
Amalgamated build (Ubuntu 22.04)	10s
fuzzing (address)	11m 39s
fuzzing (undefined)	11m 31s
fuzzing (memory)	11m 47s
MSBuild build (windows-2022)	46s
CMake build + tests (ubuntu-22.04 -DZYAN_NO_LIBC=ON)	17s
CMake build + tests (macos-latest -DZYAN_NO_LIBC=ON)	16s
CMake build + tests (macos-latest )	16s
CMake build + tests (windows-2022 )	45s
CMake build + tests (windows-2022 -TClangCL)	51s
CMake build + tests (ubuntu-22.04 -DZYDIS_MINIMAL_MODE=ON -DZYDIS_FEATURE_ENCODER=OFF)	43s
CMake build + tests (ubuntu-22.04 )	16s
CMake build + tests (windows-2022 -DZYAN_NO_LIBC=ON)	36s
Meson build + tests (ubuntu-22.04, release NO_LIBC)	40s
Meson build + tests (windows-2022, debug default)	1m 42s
Meson build + tests (ubuntu-22.04, release default)	36s
Meson build + tests (windows-2022, debug NO_LIBC)	55s
Meson build + tests (ubuntu-22.04, debug default)	25s
Meson build + tests (ubuntu-22.04, minsize minimal)	20s
Meson build + tests (macos-latest, debug default)	51s
Meson build + tests (windows-2022, release default)	1m 16s
Meson build + tests (ubuntu-22.04, debug NO_LIBC)	12s
Meson build + tests (windows-2022, release NO_LIBC)	57s
Meson build + tests (macos-latest, release default)	29s
	48m 16s

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