"shift" command support to GRUB script.

	* include/grub/script_sh.h (grub_script_shift): New prototype.
	* script/execute.c (grub_script_shift): New function.
	* script/main.c (grub_script_init): Register shift command.
	(grub_script_fini): Unregister shift command.
	* util/grub-script-check.c (grub_script_cmd_shift): New function.

	* tests/grub_script_shift.in: New testcase.
	* conf/tests.rmk: Rules for new testcase.

diff --cc ChangeLog
index 5845bb7dcb3d0f8ce5bc250601af2344f425f24d,5845bb7dcb3d0f8ce5bc250601af2344f425f24d..a8cb8f6e6403e26a8de5f99c02125211be6db8fe
--- 1/ChangeLog
--- 2/ChangeLog
+++ b/ChangeLog
@@@ -1,3 -1,3 +1,16 @@@
++2010-08-12  BVK Chaitanya  <bvk.groups@gmail.com>
++
++      "shift" command support to GRUB script.
++
++      * include/grub/script_sh.h (grub_script_shift): New prototype.
++      * script/execute.c (grub_script_shift): New function.
++      * script/main.c (grub_script_init): Register shift command.
++      (grub_script_fini): Unregister shift command.
++      * util/grub-script-check.c (grub_script_cmd_shift): New function.
++
++      * tests/grub_script_shift.in: New testcase.
++      * conf/tests.rmk: Rules for new testcase.
++
  2010-08-12  BVK Chaitanya  <bvk.groups@gmail.com>
  
        "continue" command support to GRUB script.