Thrift: Update some makefiles to make "make dist" work.

Reviewed By: mcslee

Test Plan: Ran "make dist" and did a diff.

Revert Plan: ok


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665466 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/Makefile.am b/lib/Makefile.am
index caf002f..45d741b 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -14,4 +14,5 @@
   ocaml \
   perl  \
   php   \
-  rb
+  rb    \
+  st