[LTP] [PATCH] syscalls/memcmp01: Convert to new API

[Li Wang]

Hi Lianjie,

Given the fact that the return value of memcmp() is possible
to less than, equal to, and greater than zero in str1 and str2
comparison.

So I made a change on the return value check to make
it more accurate in the testing.

e.g.

(!memcmp(str1, str2, n))  ==> (memcmp(str1, str2, n) <= 0);    str > str2
(!memcmp(str1, str2, n))  ==> (memcmp(str1, str2, n) >= 0);    str < str2

Besides that, I applied your patch with some cleanup work as well.

-- 
Regards,
Li Wang
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