Reworked single android python build script with validation layer support to be used for all example builds
Reworked single android python build script with validation layer support to be used for all example builds

refs  #297, refs #303

jpbruyere/Vulkan,jpbruyere/Vulkan,SaschaWillems/Vulkan,ming4883/Vulkan,ming4883/Vulkan,grim210/Vulkan,SaschaWillems/Vulkan,SaschaWillems/Vulkan,grim210/Vulkan,SaschaWillems/Vulkan,SaschaWillems/Vulkan,ming4883/Vulkan