Tests: More broadly use automapping binding/location.

This adds or changes binding/location decorations in 100s of shaders.
It also allows more output (spv.register.autoassign.rangetest.frag)
due to allowing ioMap() to fail.

Test/baseResults/spv.RayGenShader.rgen.out

@@ -31,6 +31,8 @@ spv.RayGenShader.rgen
                               MemberDecorate 37(block) 0 Offset 0
                               MemberDecorate 37(block) 1 Offset 16
                               Decorate 37(block) BufferBlock
+                              Decorate 39 DescriptorSet 0
+                              Decorate 39 Binding 2
                               Decorate 50(accNV1) DescriptorSet 0
                               Decorate 50(accNV1) Binding 1
                               Decorate 53(payload) Location 0