gst/goom/: Call oil_init(), otherwise oil_get_cpu_flags() won't return anything useful. Export goom debug category so...

Original commit message from CVS:
* gst/goom/gstgoom.c: (goom_debug), (plugin_init):
* gst/goom/plugin_info.c: (goom_debug), (GST_CAT_DEFAULT),
(setOptimizedMethods):
Call oil_init(), otherwise oil_get_cpu_flags() won't return
anything useful. Export goom debug category so we can get
rid of the VERBOSE define and the printfs.