93f6aa9203
- Remove issues that no longer apply thanks to devfs - Add language pointing out devfs's role and referencing its config - Add a "historical notes" section and move discussion of block vs character devs to it, including pointing out the removal of block devs - Modernize some examples MFC after: 1 week PR: 236970 Submitted by: andrew@tao173.riddles.org.uk Reviewed by: 0mp Differential Revision: https://reviews.freebsd.org/D19799