Hello,

This adds tables, indexed by the byte-order, for various be/le 
floatformat's and floating-point types.  With this, instead of:

	if (info.byte_order != BFD_ENDIAN_BIG)
	  set_gdbarch_float_format
	    (gdbarch, floatformat_ieee_single_big);
	else
	  set_gdbarch_float_format
	    (gdbarch, floatformat_ieee_single_little);

[sic], the shorter:

	set_gdbarch_float_format
	    (gdbarch, floatformat_ieee_single[info.byte_order]);

can be used.  Similarly for the corresponding types.

I'll follow up with a couple uses.

committed,
Andrew