[Packaging] Add all necessary spec file changes to support Tizen IVI.

Following up after the recent commits to fetch and build Ozone-Wayland, this
patch set introduces the changes we need to make on the RPM spec file in
order to build Crosswalk for both Tizen 2.1 Mobile and Tizen IVI. It
involves looking for the presence of certain features and, in some cases,
Tizen's major version and then depending on some packages or passing some
flags to gyp based on those factors.