used if --with-model.

rdata/readpath command uses originating filename for path search.

path searching.

"where" command gives full-precision values, and reports jump-pos with scale.
Allow for model-specific render function (initially for Maya models).
env TXDEBUG.

  --with-{elumens,ieeeio}{,-lib,-inc}
  --with-model  (for Maya models)
Always enable USE_NETHACK and USE_WARP for now.

Handle /portno properly.
parti_redraw() after receiving a command.

a single timestep ourselves!

New modules async.c and nethack.c.

Add draw-tracing hook.
Fix typo in un-ifdef'd code.

Add pointsize metering, normally #ifdef USE_PTRACK'ed out.

Fix tokenize() for case of "quoted" or 'quoted' arg strings.

Thanks, Peter.

Allows painting tabular plain-text colormaps
readable with partiview's "cmap" command.

Let @CFLAGS@ tell us where X include-files are.