The memcmp() function returns zero if the two strings are identical, oth-
erwise returns the difference between the first two differing bytes
(treated as unsigned char values, so that `\200' is greater than
`\0',
for example).gcc's x86 inline expansion of memcmp doesn't do this, so I need to fix it. Is there interest in having this in mainline, and if so how would you like it controlled?
