* emultempl/m68hc1xelf.em: New file to generate far trampolines on

	* emultempl/m68hc1xelf.em: New file to generate far trampolines on
	68HC11 and 68HC12.
	(LDEMUL_BEFORE_ALLOCATION): Override to gather the trampolines to
	generate.
	(LDEMUL_FINISH): Override to generate the trampolines after gc and
	linker relaxation.
	(LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS): Override to create the
	stub file for trampolines.
	(PARSE_AND_LIST_OPTIONS, PARSE_AND_LIST_LONGOPTS): New options
	--no-trampoline and --bank-window to control the memory bank window.