Activate OpenMP private clause for target construct and a regression test.

llvm-svn: 258140
diff --git a/clang/lib/Sema/SemaOpenMP.cpp b/clang/lib/Sema/SemaOpenMP.cpp
index 4d0d313..acc54c1 100644
--- a/clang/lib/Sema/SemaOpenMP.cpp
+++ b/clang/lib/Sema/SemaOpenMP.cpp
@@ -6475,7 +6475,7 @@
     }
 
     SourceLocation ELoc = RefExpr->getExprLoc();
-    // OpenMP [2.1, C/C++]
+    // OpenMP [3.1, C/C++]
     //  A list item is a variable name.
     // OpenMP  [2.9.3.3, Restrictions, p.1]
     //  A variable that is part of another variable (as an array or