+ * Handle Bounding boxes
+ * Relocate SetTarget "/content" stuff, too?
+ * allow "combining" Actionscript and SWF.
+ * "swfcombine -m" (e.g. "swfcombine -mT test.swf") duplicates depths:
+ relocate depth in normalcombine()
+ * "swfcombine -mT file.swf -x 300 file2.swf" doesn't work