Python compat - print statement

Make sure all print statements are compatible with Python 2 and Python3 using
the `from __future__ import print_function` statement.

Differential Revision: https://reviews.llvm.org/D56249

llvm-svn: 350307
diff --git a/llvm/utils/Reviewing/find_interesting_reviews.py b/llvm/utils/Reviewing/find_interesting_reviews.py
index 5af462b..a9ab3a3 100644
--- a/llvm/utils/Reviewing/find_interesting_reviews.py
+++ b/llvm/utils/Reviewing/find_interesting_reviews.py
@@ -1,5 +1,7 @@
 #!/usr/bin/env python
 
+from __future__ import print_function
+
 import argparse
 import email.mime.multipart
 import email.mime.text