Roll GLSLang, SPIRV-Tools and SPIRV-Headers

This CL rolls the various dependencies and updates tests as needed.

checkout_glslang_spirv_tools.sh

@@ -1,8 +1,8 @@
 #!/bin/bash
 
-GLSLANG_REV=c008fcb8cc0f6a413162fb5236d0c548cc1e0ef6
-SPIRV_TOOLS_REV=79f8caf9154a0328a87424354bd10ab69e811185
-SPIRV_HEADERS_REV=5dbc1c32182e17b8ab8e8158a802ecabaf35aad3
+GLSLANG_REV=344bd0889ac98c5369df2bf359d0369e3d235b62
+SPIRV_TOOLS_REV=fd773eb50d628c1981338addc093df879757c2cf
+SPIRV_HEADERS_REV=f8bf11a0253a32375c32cad92c841237b96696c0
 
 if [ -z $PROTOCOL ]; then
 	PROTOCOL=git

reference/opt/shaders/vulkan/frag/demote-to-helper.vk.nocompat.frag.vk

@@ -5,6 +5,5 @@ void main()
 {
     demote;
     bool _9 = helperInvocationEXT();
-    bool helper = _9;
 }