Rename Direct I/O library to DirectHW

The Direct I/O library for Mac OS X is now called DirectHW to make sure
people can find it via an internet search.

DirectIO was a generic name for a concept and thus not a good
distinguisher for a library.

Corresponding to flashrom svn r1198.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Idwer Vollering <vidwer@gmail.com>
diff --git a/cbtable.c b/cbtable.c
index 2b02e71..dbb2cff 100644
--- a/cbtable.c
+++ b/cbtable.c
@@ -203,7 +203,7 @@
 	struct lb_record *rec, *last;
 
 #ifdef __DARWIN__
-	/* This is a hack. DirectIO fails to map physical address 0x00000000.
+	/* This is a hack. DirectHW fails to map physical address 0x00000000.
 	 * Why?
 	 */
 	start = 0x400;