(INT_MAX): Likewise.
	* grub-core/lib/posix_wrap/stdio.h (snprintf): New function.
	* grub-core/lib/posix_wrap/stdlib.h (abs): Likewise.
	* grub-core/lib/posix_wrap/string.h (memcmp): Likewise.
	(strcpy): Likewise.
	(strstr): Likewise.
	(strchr): Likewise.
	(strncpy): Likewise.
	(strcat): Likewise.
	(strncat): Likewise.
	(strcoll): Likewise.
	* include/grub/types.h (GRUB_SHRT_MAX): New define.
	(GRUB_INT_MAX): Likewise.