[Snek] [keith-packard/snek] 570b05: Mark compiler temp vars in instruction debug output

[Keith Packard]

  Branch: refs/heads/master
  Home:   https://github.com/keith-packard/snek
  Commit: 570b057e060029b44f09e2796a24fc37b8cf6113
      https://github.com/keith-packard/snek/commit/570b057e060029b44f09e2796a24fc37b8cf6113
  Author: Keith Packard <keithp at keithp.com>
  Date:   2019-02-13 (Wed, 13 Feb 2019)

  Changed paths:
    M snek-code.c

  Log Message:
  -----------
  Mark compiler temp vars in instruction debug output

Compiler temps have no names

Signed-off-by: Keith Packard <keithp at keithp.com>