[From openssl to libressl + gnutls]

Possibly still ongoing upstream, though it is not clear to me:

1. What's the overall maturity level of libressl?
2. Is it (technically) possible to switch to libressl?
3. Wherever gnutls (f.i., openldap) is alternative to libressl, what's preferable?
4. If 2. is positive, is it advisable?  And, above all,
5. Did anybody succeed at it?

My first lazy attempts shows quite a bit of the customary conflicts, so I0d like to have some advice before grinding my system ;-)

[Different boost versions conflict]

Me too :-( https://bugs.funtoo.org/browse/FL-4241

[How to update kits.]

I guess overlays should still be synced via "eix-sync", right?