Add two (currently failing) tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50752 91177308-0d34-0410-b5e6-96231b3b80d8

test/LLVMC/hello.cpp

@@ -0,0 +1,8 @@
+// Test that we can compile C++ code.
+// RUN: llvmc2 %s -o %t
+// RUN: ./%t | grep hello
+#include <iostream>
+
+int main() {
+    std::cout << "hello" << '\n';
+}