RandomizeLayout identification for regression test This commit is to

resolve the identification of the RandomizeLayout attribute to the
regression test suite. Without this, running "make clang-test" will
result in a failure due to it identifying an attribute but not having it
included in
../clang/test/Misc/pragma-attribute-supported-attributes-list.test. This
protects against the addition/removal of attributes.

clang/test/Misc/pragma-attribute-supported-attributes-list.test

@@ -117,6 +117,7 @@
 // CHECK-NEXT: Overloadable (SubjectMatchRule_function)
 // CHECK-NEXT: ParamTypestate (SubjectMatchRule_variable_is_parameter)
 // CHECK-NEXT: PassObjectSize (SubjectMatchRule_variable_is_parameter)
+// CHECK-NEXT: RandomizeLayout (SubjectMatchRule_record)
 // CHECK-NEXT: RenderScriptKernel (SubjectMatchRule_function)
 // CHECK-NEXT: ReqdWorkGroupSize (SubjectMatchRule_function)
 // CHECK-NEXT: RequireConstantInit (SubjectMatchRule_variable_is_global)