don't make sense on FreeBSD. In particular,
- remove the ATTRIBUTES section,
- remove references to the Solaris Dynamic Tracing Guide, except in the
SEE ALSO section,
- update the description of the -A option for FreeBSD's implementation,
- remove references to Solaris-specific programs and configuration files,
and replace them with FreeBSD equivalents where possible.
The content has not changed aside from this.
Approved by: re (joel)
MFC after: 1 week
3f3c4e0b4a