Call stat "stat" instead of "st" in menuconfig. Use xmalloc() instead of malloc.

Call stat "stat" instead of "st" in menuconfig. Use xmalloc() instead of malloc.
perror_msg() sets return code already. Truncate long english messages that
don't get translated. Don't return int from a function hardwired to always
return 0. Don't test for that hardwired return value to change and print an
error message that can never happen and would be a duplicate anyway.
More whitespace cleanup. C does not require typecasting void *.
Remove 404 URL to stat.html that isn't in posix.