THRIFT-976 c_glib tutorial

Patch: Simon South
Signed-off-by: Roger Meier <roger@apache.org>
diff --git a/tutorial/Makefile.am b/tutorial/Makefile.am
index f3fd1dd..2b9be52 100755
--- a/tutorial/Makefile.am
+++ b/tutorial/Makefile.am
@@ -23,6 +23,10 @@
 # do nothing, just build the compiler
 else
 
+if WITH_C_GLIB
+SUBDIRS += c_glib
+endif
+
 if WITH_CPP
 SUBDIRS += cpp
 endif