Build: Don't stomp on default build flags.
Build: Don't stomp on default build flags.

pizcogirl/Astron,pizcogirl/Astron,ketoo/Astron,blindsighttf2/Astron,blindsighttf2/Astron,pizcogirl/Astron,ketoo/Astron,pizcogirl/Astron,ketoo/Astron,blindsighttf2/Astron,blindsighttf2/Astron,ketoo/Astron