ChangeLog, ext2_err.et.in, mkjournal.c:

ChangeLog, ext2_err.et.in, mkjournal.c:
  mkjournal.c (ext2fs_create_journal_superblock): Add safety check;
  	return an error if there's an attempt to create a journal less than
  	1024 filesystem blocks.
  ext2_err.et.in, mkjournal.c: Change EXT2_JOURNAL_NOT_BLOCK and
  	EXT2_NO_JOURNAL_SB to be EXT2_ET_*.