gst/goom/: Make goom reentrant by moving all important static variables into instance...

gst/goom/: Make goom reentrant by moving all important static variables into instance structures.

Original commit message from CVS:
* gst/goom/filters.c: (zoomFilterNew), (calculatePXandPY),
(setPixelRGB), (setPixelRGB_), (getPixelRGB), (getPixelRGB_),
(zoomFilterSetResolution), (zoomFilterDestroy),
(zoomFilterFastRGB), (pointFilter):
* gst/goom/filters.h:
* gst/goom/goom_core.c: (goom_init), (goom_set_resolution),
(goom_update), (goom_close):
* gst/goom/goom_core.h:
* gst/goom/goom_tools.h:
* gst/goom/graphic.c:
* gst/goom/gstgoom.c: (gst_goom_class_init), (gst_goom_init),
(gst_goom_dispose), (gst_goom_src_setcaps), (gst_goom_chain):
* gst/goom/gstgoom.h:
* gst/goom/lines.c: (goom_lines):
* gst/goom/lines.h:
Make goom reentrant by moving all important static variables
into instance structures.
(Fixes #329181)