Emit a .ident saying that clang produced this file.

Patch by Katya Romanova.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@192832 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CodeGenModule.h b/lib/CodeGen/CodeGenModule.h
index 1f49802..066009c 100644
--- a/lib/CodeGen/CodeGenModule.h
+++ b/lib/CodeGen/CodeGenModule.h
@@ -1094,6 +1094,9 @@
 
   void EmitDeclMetadata();
 
+  /// \brief Emit the Clang version as llvm.ident metadata.
+  void EmitVersionIdentMetadata();
+
   /// EmitCoverageFile - Emit the llvm.gcov metadata used to tell LLVM where
   /// to emit the .gcno and .gcda files in a way that persists in .bc files.
   void EmitCoverageFile();