Add C version of MEMCMP_EQUAL #583

Job	Run time
Clang Format	10s
Autotools MSYS	3m 41s
Autotools Mac GNU	1m 46s
Autotools Mac Clang	2m 24s
CMake MSVC install	2m 9s
Autotools Linux GNU	1m 12s
CMake MSVC 20	1m 23s
CMake MSYS	2m 39s
CodeQL	2m 35s
CMake ClangCL	2m 7s
Autotools Linux Clang	1m 15s
CMake Clang-Tidy	1m 37s
Autotools Disable long long	1m 9s
Docker ubuntu	28s
CMake Linux Clang 98	25s
Make Defaults	45s
Docker dos	24s
Autotools Distribution	24s
CMake Linux Clang 11	35s
Make STDC++ disabled	38s
Autotools Install	29s
CMake Linux Clang 14	31s
Make Memory Leak Detection disabled	39s
Make OpenWatcom DOS	1m 6s
CMake Linux Clang 17	35s
Make Disable Leak Detection and STD C++	45s
CMake Linux Clang 20	50s
Make debug disabled	35s
JUnit Test Report	41s
Make overridden CXXFLAGS and CFLAGS and CPPFLAGS	25s
CMake Linux GNU 98	32s
Make without Standard C library includes	29s
CMake No long long	36s
Make different TARGET_PLATFORM	42s
CMake Detailed	35s
Make override flags and disable memory leak and STDC++	26s
CMake Linux GNU Install	36s
Make Examples	57s
CMake Linux GNU 14	32s
Make JUnit Output	37s
CMake Linux GNU 17	34s
Make VPATH usage	1m 4s
CMake Linux GNU 20	53s
Make VPATH Install	1m 0s
CMake GCC-10	35s
CMake Clang-11	42s
CMake MinGW	3m 29s
CMake No C++ Standard Library	22s
CMake No RTTI	42s
CMake No Exceptions	31s
CMake No C Standard Library	23s
CMake Coverage	52s
CMake Address Sanitizer	37s
CMake GCC ARM embedded	4m 39s
CMake Mac install	1m 29s
CMake Apple Clang 14	1m 2s
CMake Apple Clang 17	51s
CMake Apple Clang 20	1m 8s
CMake Mac GNU 14	1m 36s
CMake OpenWatcom DOS	36s
CMake Cygwin	6m 4s
	1h 9m 33s

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