include/opcode/

include/opcode/
	* mips.h: Document "+i".

opcodes/
	* mips-opc.c (mips_builtin_opcodes): Use "+i" rather than "a" for
	"jalx".
	* mips16-opc.c (mips16_opcodes): Likewise.
	* micromips-opc.c (micromips_opcodes): Likewise.
	* mips-dis.c (print_insn_args, print_mips16_insn_arg)
	(print_insn_mips16): Handle "+i".
	(print_insn_micromips): Likewise.  Conditionally preserve the
	ISA bit for "a" but not for "+i".

gas/
	* config/tc-mips.c (validate_mips_insn, validate_micromips_insn):
	(mips_ip, mips16_ip): Handle "+i".