Reorganise struct bfd

Reorganise struct bfd

for better packing.  Removes a field and a flag that are never set.

bfd/
	* bfd.c (struct bfd): Reorganise for better packing.  Delete
	"ifd" field.  Make "format", "direction" and "flags" bitfields.
	(HAS_LOAD_PAGE): Delete, renumber following flags.
	* bfd-in2.h: Regenerate.
	* coff-tic4x.c: Remove HAS_LOAD_PAGE from extra flags in target vecs.
binutils/
	* objdump.c (dump_bfd_header): Don't print HAS_LOAD_PAGE.