GNU readline for windows

[Tatsuro M. <tma...@ya...>]

The change

2016-06-14  Bastian Maerkisch  <bma...@we...>

    * src/readline.c src/plot.c config/config.mgw config/mingw/Makefile:
    Allow console mode gnuplot on Windows to use GNU readline, which is
    more powerful than the builtin code, but still does not handle Unicode
    input on Windows.

For GNU readline, we had discussed the below:


http://gnuplot.10905.n7.nabble.com/readline-to-gnuplot-exe-console-mode-for-windows-td11173.html

I at the moment do not link the GNU readline for my CVS binary distribution unless 

a new statement will appear about the GNU readline.

Tatsuro