Revert r170500. It over-zealously converted *ALL* things named Attributes, which is wrong here.

llvm-svn: 170721
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index c1afaa7..96e911d 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -2804,7 +2804,7 @@
 
   // Warn about ignored type attributes, for example:
   // __attribute__((aligned)) struct A;
-  // Attribute should be placed after tag to apply to type declaration.
+  // Attributes should be placed after tag to apply to type declaration.
   if (!DS.getAttributes().empty()) {
     DeclSpec::TST TypeSpecType = DS.getTypeSpecType();
     if (TypeSpecType == DeclSpec::TST_class ||