I do not want to speculate whether this was done by AD by mistake or in purpose.
ArsDigita most certainly did not do this on purpose. I downloaded this tarball in July from www.arsdigita.com and the accurate version information is in root/aolserver/nsd/nsd.h. I checked a few minutes ago.
If what you say is true, you should contact ArsDigita to have them replace the current tarball with the correct one.
