Trailing space in opcodes/ generated files

HJ recently removed trailing space in binutils files, but unfortunately
they return when regenerating files in opcodes.  This fixes the regen
process.

	* cgen.sh: Trim trailing space from cgen output.
	* ia64-gen.c (print_dependency_table): Don't generate trailing space.
	(print_dis_table): Likewise.
	* opc2c.c (dump_lines): Likewise.
	(orig_filename): Warning fix.
	* ia64-asmtab.c: Regenerate.