Add an AttributedStmt type to represent a statement with C++11 attributes
attached. Since we do not support any attributes which appertain to a statement
(yet), testing of this is necessarily quite minimal.

Patch by Alexander Kornienko!

llvm-svn: 154723
diff --git a/clang/lib/Parse/ParseDecl.cpp b/clang/lib/Parse/ParseDecl.cpp
index cf3dca2..be84cdc 100644
--- a/clang/lib/Parse/ParseDecl.cpp
+++ b/clang/lib/Parse/ParseDecl.cpp
@@ -958,7 +958,7 @@
 /// [C++]   namespace-definition
 /// [C++]   using-directive
 /// [C++]   using-declaration
-/// [C++0x/C11] static_assert-declaration
+/// [C++11/C11] static_assert-declaration
 ///         others... [FIXME]
 ///
 Parser::DeclGroupPtrTy Parser::ParseDeclaration(StmtVector &Stmts,