Add a pointer to the owning LLVMContext to Module.  This requires threading LLVMContext through a lot
of the bitcode reader and ASM parser APIs, as well as supporting it in all of the tools.

Patches for Clang and LLVM-GCC to follow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74614 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/lto/LTOCodeGenerator.h b/tools/lto/LTOCodeGenerator.h
index e02a7ab..d412626 100644
--- a/tools/lto/LTOCodeGenerator.h
+++ b/tools/lto/LTOCodeGenerator.h
@@ -16,6 +16,7 @@
 #define LTO_CODE_GENERATOR_H
 
 #include "llvm/Linker.h"
+#include "llvm/LLVMContext.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/SmallVector.h"
 
@@ -53,6 +54,7 @@
     
     typedef llvm::StringMap<uint8_t> StringSet;
 
+    llvm::LLVMContext*          _context;
     llvm::Linker                _linker;
     llvm::TargetMachine*        _target;
     bool                        _emitDwarfDebugInfo;