* kern/term.c (grub_putchar): Use grub_utf8_to_ucs4 for the
conversion.
(grub_getcharwidth): New function.
* kern/misc.c (grub_utf8_to_ucs4): New function.
* include/grub/term.h (struct grub_term): Added a new member
"getcharwidth".
(grub_getcharwidth): New prototype.
* include/grub/misc.h (grub_utf8_to_ucs4): New prototype.
* term/i386/pc/console.c (map_char): New function. Segregated from
grub_console_putchar.
(grub_console_putchar): Use map_char.
(grub_console_getcharwidth): New function.
(grub_console_term): Specified grub_console_getcharwidth as
getcharwidth.
* term/i386/pc/vga.c (grub_vga_getcharwidth): New function.
(grub_vga_term): Specified grub_vga_getcharwidth as getcharwidth.
* term/i386/pc/vesafb.c (grub_virtual_screen_setup): Return
GRUB_ERRNO.
(grub_vesafb_init): Do not use RC. Instead, use GRUB_ERRNO. Rely
on grub_strtoul completely.
(write_char): Declare local variables in the beginning of the
function.
(grub_vesafb_getcharwidth): New function.
(grub_vesafb_term): Specified grub_vesafb_getcharwidth as
getcharwidth.
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