Merge changes I58c5cad2,Id6ea11fb,I595e51ae,I161b7afa,I25b547e8, ...
* changes:
libvulkan: Remove dead special cases in GetDeviceProcAddr
vulkan: Update templates for generated extensions
Don't remove elements while iterating through active_layers.
Don't assume layers exist when prop is set
vulkan: Add DevelopersGuide.pdf
Add WSI functions to the loader.
vulkan: allow drivers to see image acquire/release
vulkan: Allow drivers to add private gralloc usage flags
libvulkan: enable scaling for all Vulkan swapchains
Remove Noop and move message removal.
vknulldrv: Fix several entry point prototypes
libvulkan: Don't log error if layer dir doesn't exist
libvulkan: Fix check for redundant vkDeviceQueue calls
libvulkan: Fail instance/device creation if requested layer not present
vulkan: Fix GetSpecific*ProcAddr for extension functions
vulkan: add recursive f/n/vulkan/Android.mk
vulkan: Use the same dispatch magic value as LunarG
Update DEBUG_REPORT extension and callback for v170.2
vulkan: Add build-install_libvulkan virtual branch
vulkan: Remove sdk-0.9 virtual branch, has been merged
vulkan: Update to SDK-0.9 version of vk_ext_khr_device_swapchain.h
vulkan: Update from header 0.138.2 to 0.170.2
Add support for longer than 12 character layers.
Allow for different layers to be active per device
vulkan: Add sdk-0.9 virtual branch