Refresh OptionalObsoleteFiles.inc for MK_PMC:

• Add missing /usr/sbin/pmc, pmcformat.h, libpmcstat.h and pmc.haswellxeon.3

to the list.

• Correct man page section for pmcstudy.8.
• Include recently added libipt and libopencsd for corresponding TARGET_ARCH

MFC after: 5 days