2003-09-25  Yoshinori K. Okuji  <okuji@enbug.org>

        I forgot to check in these changes for a long time. This adds
        incomplete support for VGA console, and this is still very
        buggy. Also, a lot of consideration is required for I18N,
        UNICODE, and VGA font issues. Therefore, assume that this is
        such that "better than nothing".

        * font/manager.c: New file.
        * include/pupa/font.h: Likewise.
        * include/pupa/i386/pc/vga.h: Likewise.
        * term/i386/pc/vga.c: Likewise.
        * util/unifont2pff.rb: Likewise.

        * conf/i386-pc.rmk (kernel_img_HEADERS): Added machine/vga.h.
        (pkgdata_MODULES): Added vga.mod and font.mod.
        (vga_mod_SOURCES): New variables.
        (vga_mod_CFLAGS): Likewise.
        (font_mod_SOURCES): Likewise.
        (font_mod_CFLAGS): Likewise.

        * include/pupa/err.h (PUPA_ERR_BAD_FONT): New constant.

        * include/pupa/term.h: Include pupa/err.h.
        (struct pupa_term): Added init and fini.
        Changed the argument of putchar to pupa_uint32_t.

        * include/pupa/i386/pc/console.h: Include pupa/symbol.h.
        (pupa_console_real_putchar): New prototype.
        (pupa_console_putchar): Removed.
        (pupa_console_checkkey): Exported.
        (pupa_console_getkey): Likewise.

        * kern/misc.c (pupa_vsprintf): Add support for UNICODE
        characters.

        * kern/term.c (pupa_term_set_current): Rewritten.
        (pupa_putchar): Likewise.
        (pupa_putcode): New function.

        * kern/i386/pc/startup.S (pupa_console_putchar): Renamed to ...
        (pupa_console_real_putchar): ... this.
        (pupa_vga_set_mode): New function.
        (pupa_vga_get_font): Likewise.

        * normal/command.c: Include pupa/term.h.
        (terminal_command): New function.
        (pupa_command_init): Register the command "terminal".

        * normal/menu.c (DISP_LEFT): Changed to a UNICODE value.
        (DISP_UP): Likewise.
        (DISP_RIGHT): Likewise.
        (DISP_DOWN): Likewise.
        (DISP_HLINE): Likewise.
        (DISP_VLINE): Likewise.
        (DISP_UL): Likewise.
        (DISP_UR): Likewise.
        (DISP_LL): Likewise.
        (DISP_LR): Likewise.

        * term/i386/pc/console.c (pupa_console_putchar): New function.