* config/tc-a29k.c: Include ctype.h with angle brackets.

	* config/tc-a29k.c: Include ctype.h with angle brackets.
	(define_some_regs): Add new special register names defined on the
	29040.
	(parse_operand): Add argument opt.  If non-zero, don't warn about
	a missing operand.
	(machine_ip): If handling argument type 'I', pass opt as non-zero
	to parse_operand.  Handle new optional operand type 'I'.
	(md_undefined_symbol): Handle special register names (srNN).