Enable MVKConfiguration::preallocateDescriptors and MVK_CONFIG_PREALLOCATE_DESCRIPTORS by default. Rename MVKDescriptorTypePreallocation to MVKDescriptorTypePool.
Enable MVKConfiguration::preallocateDescriptors and MVK_CONFIG_PREALLOCATE_DESCRIPTORS by default. Rename MVKDescriptorTypePreallocation to MVKDescriptorTypePool.