BEDBUG Support for U-Boot--------------------------These changes implement the bedbug (emBEDded deBUGger) debugger in U-Boot.A specific implementation is made for the AMCC 405 processor but other flavorscan be easily implemented.######################## Modifications ########################./common/Makefile	Included cmd_bedbug.c and bedbug.c in the Makefile../common/command.c	Added bedbug commands to command table../common/board.c	Added call to initialize debugger on startup../cpu/ppc4xx/Makefile	Added bedbug_405.c to the Makefile../cpu/ppc4xx/start.S	Added code to handle the debug exception (0x2000) on the 405.	Also added code to handle critical exceptions since the debug	is treated as critical on the 405../cpu/ppc4xx/traps.c	Added more detailed output for the program exception to tell	if it is an illegal instruction, privileged instruction or	a trap. Also added debug trap handler../include/cmd_confdefs.h	Added definition of CFG_CMD_BEDBUG../include/config_WALNUT405.h	Added CFG_CMD_BEDBUG to the CONFIG_COMMANDS for the WALNUT../include/ppc_asm.tmpl	Added code to handle critical exceptions#################### New Stuff ####################./include/bedbug/ppc.h./include/bedbug/regs.h./include/bedbug/bedbug.h./include/bedbug/elf.h		[obsoleted by new include/elf.h]./include/bedbug/tables.h./include/cmd_bedbug.h./common/cmd_bedbug.c./common/bedbug.c	Bedbug library includes code for assembling and disassembling	PowerPC instructions to/from memory as well as handling	hardware breakpoints and stepping through code.  These	routines are common to all PowerPC processors../cpu/ppc4xx/bedbug_405.c	AMCC  PPC405 specific debugger routines.Bedbug support for the MPC860-----------------------------Changes:	common/cmd_bedbug.c		Added call to initialize 860 debugger.	cpu/mpc8xx/Makefile		Added new file "bedbug_860.c" to the makefile	cpu/mpc8xx/start.S		Added handler for InstructionBreakpoint (0xfd00)	cpu/mpc8xx/traps.c		Added new routine DebugException()	include/config_MBX.h		Added CFG_CMD_BEDBUG to CONFIG_COMMANDS defineNew Files:	cpu/mpc8xx/bedbug_860.c		CPU-specific routines for 860 debug registers.