* lib/jit_mips-cpu.c: Correct definition of htonr_ul.
	Correct prolog/epilog/va* routines to work on o64 abi.

	* lib/jit_mips-fpu.c: Correct load of double literal
	argument when not using a data buffer.
	Remove alignment correction in vaarg_d if using the
	new mips abi.

	* lib/jit_mips.c: Correct code to allow creating variadic
	jit functions when using the new mips abi.

	* lib/jit_rewind.c: Minor adjust for rewind when using
	the new mips abi, if there are varargs arguments in
	registers.