util: Pass Vulkan and SPIR-V options to glslang
util: Pass Vulkan and SPIR-V options to glslang

This allows converting shaders into SPIR-V that use
features from KHR_vulkan_glsl.

Radamanthe/VulkanSamples,Radamanthe/VulkanSamples,Radamanthe/VulkanSamples,Radamanthe/VulkanSamples,Radamanthe/VulkanSamples,Radamanthe/VulkanSamples