root: should Root::resolve_nofollow actually be flipped to Root::resolve_follow?

[cyphar]

All of our internal APIs make the assumption that the more common case is that we do not want to follow trailing symlinks. This is true for how we've implemented things so far, but since libpathrs handles such symlinks safely, maybe having follow-trailing be the default behaviour is more favourable?

[cyphar]

Another option would be to take a flags argument to Root::resolve -- I didn't like that idea when I implemented it because adding more flag types is kinda ugly (and taking O_NOFOLLOW would be even uglier imho).

This decision has an impact on #270 -- if we decide that resolve_nofollow is okay then #270 isn't really necessary...