Add erl back to EXTRA_DIST because it doesn't use Automake.


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@675855 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 0765f03..32240ae 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -21,10 +21,13 @@
 SUBDIRS += rb
 endif
 
+# All of the libs that don't use Automake need to go in here
+# so they will end up in our release tarballs.
 EXTRA_DIST = \
   cocoa \
   hs    \
   ocaml \
   perl  \
   php   \
+  erl   \
   st