2006-12-12 Marco Gerards <marco@gnu.org>

* include/grub/err.h (grub_err_t): Add `GRUB_ERR_MENU'.

	* kern/env.c (grub_env_unset): Don't free the member `value' when
	the type is GRUB_ENV_VAR_DATA, in this case it's a user defined
	pointer.

	* normal/main.c (current_menu): Removed.
	(free_menu): Unset the `menu' environment variable.
	(grub_normal_menu_addentry): Make use of the environment variable
	`menu', instead of using the global `current_menu'.  Allocate
	memory for the sourcecode of this entry.
	(read_config_file): New argument `nested', changed all callers.
	Only in the case of a new context, initialize a new menu.  Set the
	`menu' environment variable.
	(grub_normal_execute): Don't set and unset the environment
	variable `menu' here anymore.  Only free the menu when leaving the
	context.

	* util/i386/pc/biosdisk.c (linux_find_partition): Fixed a memory
	leak.

include/grub/err.h

@@ -52,6 +52,7 @@ typedef enum
     GRUB_ERR_NOT_IMPLEMENTED_YET,
     GRUB_ERR_SYMLINK_LOOP,
     GRUB_ERR_BAD_GZIP_DATA,
+    GRUB_ERR_MENU
   }
 grub_err_t;