Remove some statements which are no longer correct after ino64, and
clarify other.
The rewording is not in fact specific to ino64 and improvements are
useful on the stable branches.
Noted and reviewed by: bde
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
- Document the minor(3), major(3) and makedev(3) macro's. They also
apply to umajor() and uminor() in the kernel, but hopefully we'll sort
that out one day.
- Briefly dev2unit() inside the make_dev(9) manual page, since this is
now the preferred macro to obtain character device unit numbers inside
the kernel.
- Remove the device_ids(9) manual page. It contains highly inaccurate
information, such as a description of the nonexistent major().
