Hello. multiboot helpers have no real reason to stay in kernel. So here 
is the proposition to move them out of it to _multiboot.mod.
Changelog:
2009-02-11  Vladimir Serbinenko  <phcoder@gmail.com>

	Move multiboot helper out of kernel

	* conf/i386-pc.rmk: Add loader/i386/multiboot.S to
	_multiboot.mod
	* conf/i386-coreboot.rmk: Likewise
	* conf/i386-ieee1275.rmk: Likewise
	* kern/i386/loader.S: Move multiboot helpers from here...
	* loader/i386/multiboot.S: ...moved here
	* include/grub/i386/loader.h: Move declarations of multiboot
	helpers from here...
	* include/grub/i386/multiboot.h: ...moved here
	* loader/i386/pc/multiboot.c: Added include of
	grub/cpu/multiboot.h

Thanks
Vladimir 'phcoder' Serbinenko