jetty: remove dead code
python: remove unnecessary mkpath
python: prune caveats a bit
Updating xplanet: adding cspice option

Along with general housekeeping. The formulas now offers all XPlanet configure options. Also modified the formula to the new Homebrew syntax standards.
Fixing build.with "or" syntax
fixing parens
parens again...
xplanet: add 1.3.0 bottle.