Local copy truncates millisecond part of modification time on both source and target

From customer report:

copy with stealth option will alter source and target modificaiton time

When doing a local copy using the stealth option, the milliseconds
modification times are truncated on the source as well as the target.

This exists in all CFE versions. In 3.6.5, in verify_files_utils.c:

<pre>
if (attr.copy.stealth)
{
#ifdef HAVE_UTIME_H
timebuf.actime = sstat.st_atime;
timebuf.modtime = sstat.st_mtime;
utime(source, &timebuf);
#endif
}
</pre>