Rename LLVMSetDataLayout's argument to match what they stand for

llvm-svn: 260916
diff --git a/llvm/include/llvm-c/Core.h b/llvm/include/llvm-c/Core.h
index c244574..cd987c8 100644
--- a/llvm/include/llvm-c/Core.h
+++ b/llvm/include/llvm-c/Core.h
@@ -490,7 +490,7 @@
  *
  * @see Module::setDataLayout()
  */
-void LLVMSetDataLayout(LLVMModuleRef M, const char *Triple);
+void LLVMSetDataLayout(LLVMModuleRef M, const char *DataLayoutStr);
 
 /**
  * Obtain the target triple for a module.