* Makefile.in (GNULIB_CFLAGS): New variable.
	* conf/common.rmk (grub_mkisofs_CFLAGS): Add GNULIB_CFLAGS.
	(grub_script_check_CFLAGS): New variable.
	* gnulib/alloca.h: Resync with gnulib.
	* gnulib/error.c: Likewise.
	* gnulib/error.h: Likewise.
	* gnulib/fnmatch.c: Likewise.
	* gnulib/fnmatch_loop.c: Likewise.
	* gnulib/getdelim.c: Likewise.
	* gnulib/getline.c: Likewise.
	* gnulib/getopt.c: Likewise.
	* gnulib/getopt1.c: Likewise.
	* gnulib/getopt_int.h: Likewise.
	* gnulib/gettext.h: Likewise.
	* gnulib/progname.c: Likewise.
	* gnulib/progname.h: Likewise.

        Fix build for systems without error().

        * gnulib/error.c: New file (imported from Gnulib).
        * gnulib/error.h: Likewise.
        * conf/common.rmk (grub_mkisofs_SOURCES): Add `gnulib/error.c'.
        * util/mkisofs/mkisofs.c (program_name): Remove `static' qualifier
        (this variable is now used by error()).