* tuiIO.h: Remove old declarations and add the new ones.

    * tuiIO.h: Remove old declarations and add the new ones.
        * tuiIO.c: New management for curses and gdb terminal interactions.
        (tui_tputs): Remove.
        (tuiTermSetup, tuiTermUnsetup): Remove, must use normal curses ops.
        (tuiBufferGetc, tui_vStartNewLines, _updateCommandInfo): Remove.
        (tui_owns_terminal): Remove.
        (tui_redisplay_readline): New function.
        (tui_puts): New function.
        (tui_prep_terminal): New function.
        (tui_deprep_terminal): New function.
        (tui_getc): Rename of tuiGetc, simplify and fix.
        (tui_setup_io): New function.
        (tui_initialize_io): New function.