Patch to build gdb-5.0 with readline-4.1

[Eli Zaretskii]

> Date: Sun, 28 May 2000 21:03:18 +0200
> From: Andrew Gaylard <andrew.gaylard@bsw.co.za>
> 
>  /* readline include files */
> +/* This is needed to prevent readline-4.1 (re-)defining it.  */
> +#define savestring
>  #include <readline/readline.h>
>  #include <readline/history.h>
>  
>  #include <signal.h>
>  
> -/* readline defines this.  */
> +/* readline needed this.  */
>  #undef savestring

What's the story behind this savestring gork?  Is it possible to take
care of the problem in a cleaner way?

>    rl_completer_quote_characters = gdb_completer_quote_characters;
>    rl_readline_name = "gdb";
> +  rl_terminal_name=getenv("TERM");

What does readline do with rl_terminal_name?  What if getenv returns a
NULL pointer?  (Non-Unix ports of GDB are likely to have $TERM
undefined.)