* defs.h printcmd.c: Create global disassemble_info structure

	* defs.h printcmd.c:  Create global disassemble_info structure
	tm_print_insn_info.
	* gdbtk.c (gdb_disassemble):  Setup di.mach from
	tm_print_insn_info.mach, and set endian from TARGET_BYTE_ORDER.
	* i386-tdep.c (set_assembly_language_command):  set
	tm_print_insn_info.mach to the appropriate value for 386 or 8086
	disassembly.
	* printcmd.c (print_insn):  Move init of disassembler_info to
	_initialize_printcmd.  Set endian for disassembler here.
	* sparc-tdep.c:  Set tm_print_insn_info.mach as appropriate to
	select sparc/sparclite.
	* config/sparc/{tm-sparc.h tm-sparclite.h}:  Get rid of
	TM_PRINT_INSN.  Set TM_PRINT_INSN_MACH to
	bfd_mach_sparc/bfd_mach_sparc_sparclite.