Created new named TrademarkProgram.rst.
Kept old doc CoreDefintion.rst that is replaced by
TrademarkProgram.rst.
Core Defintion is no longer defined by TC.
Removed old reference to Havana and Grizzly release.
Updated meeting info.
Add coverage for Add-on programs.
Added coverage to drivers and vendor plugins, cleaned up language
for laternative implementation.
Added that board delegated its approval of guidelines
to the Approval Committee.
Any process changes need to get approved by the Board.
Change-Id: Ie439e1c8ff015621bf8936994173c095f0d08970
73f5222876