add headers and implementation for <new>, <exception>, and <typeinfo>

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103795 91177308-0d34-0410-b5e6-96231b3b80d8

src/typeinfo.cpp

@@ -0,0 +1,41 @@
+//===------------------------- typeinfo.cpp -------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+#include <stdlib.h>
+
+#include "typeinfo"
+
+std::bad_cast::bad_cast() throw() 
+{ 
+}
+
+std::bad_cast::~bad_cast() throw() 
+{ 
+}
+
+const char* 
+std::bad_cast::what() const throw()
+{
+  return "std::bad_cast";
+}
+
+
+std::bad_typeid::bad_typeid() throw() 
+{ 
+}
+
+std::bad_typeid::~bad_typeid() throw() 
+{
+}
+
+const char* 
+std::bad_typeid::what() const throw()
+{
+  return "std::bad_typeid";
+}
+