Added light bulb to tests.
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/data/objects/bulb.rad Sun Jan 05 20:42:31 2014 +0000
@@ -0,0 +1,11 @@
+# A 100W white light bulb, modelled in metres.
+void light bulb_mat
+0
+0
+3 236 236 236
+
+bulb_mat sphere bulb
+0
+0
+4 0 0 0 .03
+