THRIFT-2401 Haskell tutorial compiles

Patch: John Chee & Roger Meier

includes minifix from:
THRIFT-2453 haskell tutorial: fix up division by 0 example
diff --git a/configure.ac b/configure.ac
index 995dba5..cc89593 100755
--- a/configure.ac
+++ b/configure.ac
@@ -660,6 +660,7 @@
   tutorial/Makefile
   tutorial/cpp/Makefile
   tutorial/go/Makefile
+  tutorial/hs/Makefile
   tutorial/java/Makefile
   tutorial/js/Makefile
   tutorial/nodejs/Makefile