Humble fix

Update spirv-tools known_good to latest stable

GL_EXT_ray_query accelerationStructureEXT 

GL_EXT_ray_query pass-by-reference issues

sync to KhronosGroup/glslang

Add missing braces to if condition

The indentation implies this was the intention. Noticed the issue while trying to compile our code with -Werror -Wall

GL_EXT_ray_query updates

Fix build on CMake 2.8, and fix Web build

And suppress some warnings that are too verbose in Web builds.

Make file formatting comply with POSIX and Unix standards

UTF-8, LF, no BOM, and newlines at the end of files