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.swizzleInversion.frag.out

@@ -20,6 +20,8 @@ spv.swizzleInversion.frag
                               Name 37  "in3"
                               Name 40  "v32"
                               Name 43  "v31"
+                              Decorate 12(in4) Location 0
+                              Decorate 37(in3) Location 1
                2:             TypeVoid
                3:             TypeFunction 2
                6:             TypeFloat 32