Revert "THRIFT-5501 Remove Common Lisp support"

This reverts commit d88d4f93b3390989bd47a43f3941ca7d576750f6.
diff --git a/tutorial/Makefile.am b/tutorial/Makefile.am
index 77e8593..ba445e0 100644
--- a/tutorial/Makefile.am
+++ b/tutorial/Makefile.am
@@ -74,6 +74,10 @@
 SUBDIRS += rs
 endif
 
+if WITH_CL
+SUBDIRS += cl
+endif
+
 if WITH_PERL
 SUBDIRS += perl
 endif