ext/ladspa/gstladspa.*: Finish porting, still doesn't work but it does compile and...

ext/ladspa/gstladspa.*: Finish porting, still doesn't work but it does compile and register. I have more features tha...

Original commit message from CVS:
2005-08-26  Andy Wingo  <wingo@pobox.com>

* ext/ladspa/gstladspa.c:
* ext/ladspa/gstladspa.h: Finish porting, still doesn't work but
it does compile and register. I have more features than you.

* ext/ladspa/gstsignalprocessor.h:
* ext/ladspa/gstsignalprocessor.c: Updates, bug fixen.