bug#21104: 25.0.50; relative paths are added to load-path without -nsl (bug#21104)

[Eli Zaretskii]

> From: Glenn Morris <rgm@gnu.org>
> Cc: andlind@gmail.com,  esq@lawlist.com,  21104@debbugs.gnu.org
> Date: Tue, 08 Dec 2015 12:54:52 -0500
> 
> But like Andreas, my guess would be that "." and nil are equivalent here.
> Maybe you could just special-case it so that PATH_SITELOADSEARCH empty
> acts like no_site_lisp is set?

Yes, that would also work.  Anders, can you try that?