bug#7840: SYMBOL_VALUE in terminal.c (was 23.2.91; default-terminal-coding-system not inherited by created terminals)

[Chong Yidong]

> 2011-02-12  Eli Zaretskii  <eliz@gnu.org>

>       * terminal.c (create_terminal): Use default-keyboard-coding-system
>       and default-terminal-coding-system to initialize coding systems of
>       the new terminal.  (Bug#7840)
>
> !   keyboard_coding = SYMBOL_VALUE (intern 
> ("default-keyboard-coding-system"));
> !   if (NILP (keyboard_coding)
> !       || EQ (keyboard_coding, Qunbound)
> !       || NILP (Fcoding_system_p (keyboard_coding)))
> !     keyboard_coding = Qno_conversion;
> !   terminal_coding = SYMBOL_VALUE (intern 
> ("default-terminal-coding-system"));

This change doesn't build on the trunk, due to Stefan's 2010-04-20
change removing SYMBOL_VALUE.

I left out this change when doing the last merge from the branch.  Would
you mind working up a separate patch and applying it to the trunk?
(Fsymbol_value apparently doesn't work here, because the symbols can be
unbound and we don't want to signal an error.)

Thanks.