MFC {r1.14--r1.16}:  - Spelling/grammar fixes.  - Typo fix: "ing" -> "in".  - Document the EOPNOTSUPP returned by hwpmc(4) if a sampling    mode PMC is requested on a CPU without an APIC.
MFC {r1.14--r1.16}:
 - Spelling/grammar fixes.
 - Typo fix: "ing" -> "in".
 - Document the EOPNOTSUPP returned by hwpmc(4) if a sampling
   mode PMC is requested on a CPU without an APIC.

Bump document date.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase