This is the forth in a series of patches that removes a bug and some glitches
from GRUB stage 1. This is against grub-0.94 (alpha), my first three patches
applied.

Submitted by Wolf Lammen, ookami1<at>gmx<dot>de

I looked through the complete code of stage 1 and found some oddities.
This patch addresses one: makes boot_drive_mask a variable at a fixed location.
Impact: increases code by 1 byte, eases maintainance of the code.

Use this patch together with stage1.S.patch.4. See that file contains for
more information.

--- stage1.h	2004-02-09 06:27:23.000000000 +0100
+++ stage1.h.new	2004-02-09 06:41:36.000000000 +0100
@@ -39,8 +39,8 @@
 /* The offset of BOOT_DRIVE.  */
 #define STAGE1_BOOT_DRIVE	0x40
 
-/* The offset of FORCE_LBA.  */
-#define STAGE1_FORCE_LBA	0x41
+/* The offset of BOOT_DRIVE_MASK.  */
+#define STAGE1_BOOT_DRIVE_MASK	0x41
 
 /* The offset of STAGE2_ADDRESS.  */
 #define STAGE1_STAGE2_ADDRESS	0x42
@@ -51,8 +51,8 @@
 /* The offset of STAGE2_SEGMENT.  */
 #define STAGE1_STAGE2_SEGMENT	0x48
 
-/* The offset of BOOT_DRIVE_MASK.  */
-#define STAGE1_BOOT_DRIVE_MASK	0x54
+/* The offset of FORCE_LBA.  */
+#define STAGE1_FORCE_LBA	0x49
 
 /* The offset of a magic number used by Windows NT.  */
 #define STAGE1_WINDOWS_NT_MAGIC	0x1b8