THRIFT-3592 Add basic test client

This closes #830
diff --git a/configure.ac b/configure.ac
index 7dc5649..34f56d2 100755
--- a/configure.ac
+++ b/configure.ac
@@ -748,6 +748,7 @@
   test/go/Makefile
   test/haxe/Makefile
   test/hs/Makefile
+  test/lua/Makefile
   test/php/Makefile
   test/dart/Makefile
   test/perl/Makefile
@@ -799,6 +800,8 @@
 AC_SUBST([MAYBE_NODEJS])
 if test "$have_erlang" = "yes" ; then MAYBE_ERLANG="erl" ; else MAYBE_ERLANG="" ; fi
 AC_SUBST([MAYBE_ERLANG])
+if test "$have_lua" = "yes" ; then MAYBE_LUA="lua" ; else MAYBE_LUA="" ; fi
+AC_SUBST([MAYBE_LUA])
 
 AC_OUTPUT