Improve man-page formatting

[ThinkOpenly]

Current man-page renders as:

*OPTIONS*
       *SYSTEM*
              *interactive* A simple text-driven interactive interface
              to the Phoronix Test Suite.

       *php-conf*
              This option will print information that is useful to
              developers when debugging problems with the Phoronix
              Test Suite and/or test profiles and test suites.

       *shell*
              A simple text-driven shell interface / helper to the
              Phoronix Test Suite. Ideal for those that may be new
              to the Phoronix Test Suite

Note how "interactive" is indented differently than subsequent options, which are themselves only indented to the level equal to the respective subsection header.

Fix three things:

• Indent all options within a subsection equally by making them all "tagged paragraphs".
• Unindent subsection headers by changing them from "section headers" to "subsection headers".
• Change subsection headers to leading caps only in line with preferred man-pages style (man-pages(7)).

New rendering:

*OPTIONS*
   *System*
       *interactive*
              A  simple text-driven interactive interface to the Phoronix Test
              Suite.

       *php-conf*
              This option will print information that is useful to  developers
              when debugging problems with the Phoronix Test Suite and/or test
              profiles and test suites.

       *shell*  A simple text-driven shell interface / helper  to  the  Phoronix
              Test Suite. Ideal for those that may be new to the Phoronix Test
              Suite