clean up some modelinterp code to not use memcpy() everywhere so it's more platform compatible and matches old code (Jens Granseuer)
NaN check to catch shards-of-death and prevent hitting an Assert() (Jens Granseuer)
fix jumpnode code to catch model errors and close a memory leak
make the call to bm_unload_all() after model_free_all() since we will get bmpman screwups otherwise
don't show hardware sound RAM when using OpenAL build, it will always be 0
print top-right memory figures in debug builds slighly further over when 1024+ res
started work on fixing the node model not rendering,
but most of that got commented out so I wouldn't have to deal with it
while mucking about with the polylist