Vulkan CTS 1.0.2.4
New tests:
* Add tests for VK_KHR_external_fence
VK_KHR_external_fence_capabilities
VK_KHR_external_fence_fd
VK_KHR_external_fence_win32
* Add tests for VK_KHR_external_semaphore
VK_KHR_external_semaphore_capabilities
VK_KHR_external_semaphore_fd
VK_KHR_external_semaphore_win32
* Add tests for VK_KHR_external_memory
VK_KHR_external_memory_capabilities
VK_KHR_external_memory_fd
VK_KHR_external_memory_win32
* Add tests for VK_KHR_win32_keyed_mutex
* Add tests for VK_KHR_dedicated_allocation
* Add tests for VK_KHR_get_memory_requirements2
* Add tests for VK_KHR_16bit_storage
* Add tests for VK_KHR_storage_buffer_storage_class
* Add tests for VK_KHR_variable_pointers
Improvements:
* Refactor X11 and wayland platforms to run alongside each other
* Improve GLSL source program support
* Cherry-pick SPIR-V assembly test improvements
* Add 32 to 16 bit float conversion w.r.t rounding mode
* Add create functions for common Vulkan types
* Add deInt64 alignment functions to delibs
Fixes:
* Fix and inline the Image::getPixelOffset helper
* Do not report warning if OOM testing is incomplete
* Check sampler_mirror_clamp_to_edge extension in tex filter tests
* Add more alternatives to reflect() precision tests
* Import fixes from Android Vulkan CTS 1.0.2 branch
* Fix Vulkan null driver
* Fixed invalid usage of VkBufferImageCopy struct
* Fix an incorrect layout transition
* Check 'drawIndirectFirstInstance' feature to run indirect draw tests
* Allow pop-free clipping for lines
* Atomic counter tests rely on stores to SSBOs
* Add missing flushes for buffer view access tests
* Slightly increase threshold in dEQP-VK.draw.basic_draw.draw_indirect
* Add missing flush for opaque_type_indexing tests
* Touch watchdog before freeing objs in max_concurrent
* Check for shaderFloat64 before creating shaders
* Defer device creation until after feature checks
* Use transfer queue with vkCmdFillBuffer
* Remove individual 3D slice layout transitions