changes to make it compatible with 64bit gcc

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2789 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Analysis/Writer.cpp

@@ -14,6 +14,7 @@
 #include <iterator>
 #include <algorithm>
 #include <string>
+#include <iostream>
 using std::ostream;
 using std::set;
 using std::vector;