2010-01-20  Vladimir Serbinenko  <phcoder@gmail.com>

	* include/grub/misc.h (grub_sprintf): Removed. All users switched to
	grub_xasprintf or grub_snprintf.
	(grub_vsprintf): Likewise.
	(grub_snprintf): New proto.
	(grub_vsnprintf): Likewise.
	(grub_xasprintf): Likewise.
	(grub_xvasprintf): Likewise.
	* kern/misc.c (grub_vprintf): Use grub_vsnprintf_real.
	(grub_sprintf): Removed.
	(grub_vsnprintf): New function.
	(grub_snprintf): Likewise.
	(grub_xvasprintf): Likewise.
	(grub_xasprintf): Likewise.
	(grub_vsprintf): Renamed to ...
	(grub_vsnprintf_real): ...this. New argument max_len.