Dummy library uses "unsigned int" rather than "size_t"

[Roger-Shepherd]

Trying to build the benchmarks for size on a Mac and thus using dummy-libc.c the compiler complains about (e.g.)

int
memcmp (const void *s1 __attribute__ ((unused)),
    const void *s2 __attribute__ ((unused)),
    unsigned int n __attribute__ ((unused)))
    {
        return 0;
    }

with the message

/Users/Roger/Programming/embench-iot/support/dummy-libc.c:44:1: note: 'memcpy' is a builtin with type 'void *(void *, const void *, unsigned long)'

I think the problem is that the sourcing is using unsigned int rather than size_t. I believe that at least x86-64 and aarch64 (arm64) Linux, OS X and iOS all have size_t ultimately defined as unsigned long.

[Roger-Shepherd]

I've made this suggested change and it works for ARM M1 and X86 compilation on Mac OS. It needs testing on other systems.

[PaoloS02]

Solved with PR #132