m68k bfd.h tidy
    
    bfd/
    	* bfd-in.h: Move m68k function declaration..
    	* cpu-m68k.h: ..to here, new file..
    	* elf32-m68k.h: ..and here, new file.
    	* elf32-m68k.c: Include cpu-m68k.h and elf32-m68k.h.
    	* bfd-in2.h: Regenerate.
    ld/
    	* emultempl/m68kelf.em: Include elf32-m68k.h.
    opcodes/
    	* m68k-dis.c: Include cpu-m68k.h