* coff-mips.c: Include libaout.h and aout/aout64.h to get

	* coff-mips.c: Include libaout.h and aout/aout64.h to get
	definitions for N_SET[ATDB].
	(ecoff_howto_table): Moved near top of file.
	(ecoff_set_symbol_info): If a STABS symbol of type N_SET[ATDB] is
	seen, cook up a constructor section of the same name and put in a
	reloc pointing to the symbol.  This lets the GNU linker build
	global constructors and destructors without using collect.