Readline terminal size at startup patch using SIGWINCH

[Daniel J Sebald]

I put a small changeset on Savanah patch tracker here:

https://savannah.gnu.org/patch/index.php?8532

that removes the callback which uses

  command_editor::resize_terminal ();

in preference to raising a SIGWINCH signal through the kernel.  Please 
evaluate, and if there is someone with a Windows platform give feedback 
on whether this change, as I'm not sure it was ever a problem with 
Windows.  The issue has to do with the initial Readline terminal size at 
startup that Octave core uses for formating.

Thanks,

Dan