Add an input file that includes all standard C++ headers

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83042 91177308-0d34-0410-b5e6-96231b3b80d8

Author: DougGregor

INPUTS/all-std-headers.cpp

@@ -0,0 +1,51 @@
+#include <algorithm> 
+#include <bitset> 
+#include <cassert>
+#include <cctype>
+#include <cerrno>
+#include <cfloat>
+#include <ciso646>
+#include <climits>
+#include <clocale>
+#include <cmath>
+#include <complex>
+#include <csetjmp>
+#include <csignal>
+#include <cstdarg>
+#include <cstddef>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <ctime>
+#include <cwchar>
+#include <cwctype>
+#include <deque>
+#include <exception>
+#include <fstream> 
+#include <functional> 
+#include <iomanip> 
+#include <ios> 
+#include <iosfwd>
+#include <iostream>
+#include <istream>
+#include <iterator>
+#include <limits> 
+#include <list> 
+#include <locale> 
+#include <map>
+#include <memory>
+#include <new>
+#include <numeric> 
+#include <ostream>
+#include <queue> 
+#include <set> 
+#include <sstream>
+#include <stack>
+#include <stdexcept>
+#include <streambuf>
+#include <string>
+#include <strstream> 
+#include <typeinfo>
+#include <utility>
+#include <valarray>
+#include <vector>