* ecoff-ext.h: Added prototypes for ECOFF swapping functions.
* internal.h (internal_scnhdr): Always provide s_align field, not
just on i960.
(internal_reloc): Always provide r_size field, not just on
RS/6000.
* mips.h (_RDATA, _SDATA, _SBSS, _LIT4, _LIT8, STYP_RDATA,
STYP_SDATA, STYP_SBSS, STYP_LIT4, STYP_LIT8): Defined.
(CODE_MASK, MIPS_IS_STAB, MIPS_MARK_STAB, MIPS_UNMARK_STAB,
STABS_SYMBOL): Moved in from gdb/mipsread.c.