Add location order to the definition of from-reads #879

Job	Run time
Build the core-only spec, to try and catch ifdef errors in extension markup	52s
Build the vulkan specification and generate any associated files (such as vulkan.h)	6m 15s
Run Vulkan CTS framework tests to validate against XML changes	1m 47s
Verify repository license compliance	39s
Run various checker scripts on the spec and XML sources	52s
Build a test spec and check against expectation, to make sure the spec toolchain works as expected	1m 17s
Generate the vulkan C++ header (vulkan.hpp)	1m 7s
Generate Rust bindings (Ash crate)	2m 28s
Compile a simple test program that uses vulkan.h	10s
Compile a simple test program that uses vulkan.hpp	33s
Build-test Rust bindings (Ash crate)	1m 52s
	17m 52s

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