Make the use of const with respect to LLVMContext sane.  Hopefully this is the last time, for the
moment, that I will need to make far-reaching changes.

llvm-svn: 74655
diff --git a/llvm/lib/Archive/ArchiveWriter.cpp b/llvm/lib/Archive/ArchiveWriter.cpp
index e840354..881d75b 100644
--- a/llvm/lib/Archive/ArchiveWriter.cpp
+++ b/llvm/lib/Archive/ArchiveWriter.cpp
@@ -64,7 +64,7 @@
 }
 
 // Create an empty archive.
-Archive* Archive::CreateEmpty(const sys::Path& FilePath, const LLVMContext& C) {
+Archive* Archive::CreateEmpty(const sys::Path& FilePath, LLVMContext& C) {
   Archive* result = new Archive(FilePath, C);
   return result;
 }