Release for Vulkan SDK 1.1.108

• Add support for extensions:
  • VK_EXT_debug_report
  • VK_EXT_debug_marker
  • VK_EXT_debug_utils
  • VK_NV_glsl_shader
• Support setting workgroup size for shader modules that use
  MSL directly instead of converting from SPIR-V.
• Tessellation fixes:
  • Don't use setVertexBytes() for passing tessellation vertex counts.
  • Fix intermediate Metal renderpasses load and store actions maintaining
    attachments appropriately.
  • Use empty depth state for tessellation vertex pre-pass.
  • Fix tessellated indirect draws using wrong kernels to map parameters.
  • Work around potential Metal bug with stage-in indirect buffers.
  • Fix zero local threadgroup size in indirect tessellated rendering.
  • Fix [[attribute]] assignment for tessellation evaluation shaders.
• VkSemaphore optionally uses MTLEvent, if available and
  MVK_ALLOW_METAL_EVENTS environment variable is enabled.
• Add vkSetWorkgroupSizeMVK() to set compute kernel workgroup size
  when using MSL source code or MSL compiled code.
• Allow zero count of viewports and scissors.
• Report image layer limits for attachments in vkGetPhysicalDeviceImageFormatProperties().
• Change log indication of error in logs from [***MoltenVK ERROR***] to
  [mvk-error], for consistency with other log level indications.
• Allow mvkMTLRenderStagesFromVkPipelineStageFlags() to map to all Vulkan stages,
  by indicating whether the pipeline barrier should come before or after the stages.
• Automatically update VkPhysicalDeviceProperties::pipelineCacheUUID when SPIRV-Cross revision changes.
• Fix crash when clearing attachments using layered rendering on older macOS devices.
• Fixes to Metal renderpass layered rendering settings.
• vkCmdClearAttachments() returns encoder to previous pipeline, depth-stencil & resource state after execution.
• Fix issue clearing stencil attachment via renderpass when depth attachment is not being cleared.
• Fix sporadic crash on vkDestroySwapchainKHR().
• MoltenVKShaderConverter tool: Add MSL version and platform command-line options.
• Fix crash on pipeline cache merge after VkShaderModule destroyed.
• Fix case where viewport/scissor doesn't get set properly when mixing dynamic and
  static-configured pipelines in the same command buffer.
• Fix a race condition between sync objects and queries.
• Fix unused attachments terminating loop early.
• Fix offset of buffer view relative to buffer offset within device memory.
• Guard against missing Metal pipeline states when pipeline compilation fails.
• MVKBuffer: Force managed storage for linear textures on shared buffers.
• Use device address space when decompressing DXT image data.
• Added missing texelBufferTextureWidth setting in MVKComputePipeline::getMTLFunction().
• Fixes and consolidation of external library header references.
• Allow building external dependency libraries in Debug mode.
• Enable AMD and NV GLSL extensions when building glslang for MoltenVKGLSLToSPIRVConverter.
• Make external library header references consistent and add MVK_EXCLUDE_SPIRV_TOOLS option.
• MVKVector improvements.
• Update VK_MVK_MOLTENVK_SPEC_VERSION to 20.
• Update to latest SPIRV-Cross version:
  • MSL: Add support for subgroup operations.
  • MSL: Support argument buffers and image swizzling.
  • MSL: Add support for OpArrayLength.
  • MSL: Only use constant address space for tessellation control shader.
  • MSL: Support native texture_buffer type, throw error on atomics.
  • MSL: Add native texture buffer support.
  • MSL: Deal with texture swizzle on arrays of images.
  • MSL: Fix complex type alias declaration order.
  • MSL: Fix declaration of unused input variables.
  • MSL: Use correct address space when passing array-of-buffers.
  • MSL: Deal correctly with nonuniformEXT qualifier.
  • MSL: Cast texture_buffer index to uint.
  • MSL: Fix nonuniform test.
  • MSL: Fix regression with Private parameter declaration.
  • MSL: Support remapping constexpr samplers by set/binding.
  • MSL: Support Invariant qualifier on position.
  • MSL: Support stencil export.
  • Deal with case where a block is somehow emitted in a duplicated fashion.
  • Fix infinite loop when OpAtomic* temporaries are used in other blocks.
  • Fix tests for device->constant address space change in MSL tessellation control shader generation.
  • Accept SPIR-V 1.4 version.