Major cleanup of libfuse to remove unneeded features

* Remove request interrupt code. Required tracking of all requests unnecesssarily.
* Remove all debugging printing. Have plans to do full replacement.
* Remove deprecated functions.
* Remove unneeded error checking.
* Remove "userdata" which was unused.
* Remove allow_root feature.

src/fuse_destroy.cpp

@@ -17,7 +17,7 @@
 namespace FUSE
 {
   void
-  destroy(void *)
+  destroy(void)
   {
 
   }