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.dataOut.frag.out

@@ -12,6 +12,7 @@ spv.dataOut.frag
                               Name 4  "main"
                               Name 12  "gl_FragData"
                               Name 16  "Color"
+                              Decorate 16(Color) Location 0
                2:             TypeVoid
                3:             TypeFunction 2
                6:             TypeFloat 32