mdocify the dtrace(1) man page and remove Solarisisms.

In particular,
- remove the ATTRIBUTES section
- remove references to the -A option
- remove references to the Solaris Dynamic Tracing Guide (except in the
  SEE ALSO section).
- remove any references to Solaris-specific programs and configuration.
Merge branch '20131006-dtrace-mdoc' into markj-develop