* ecoff.c (_bfd_ecoff_write_armap): give the symtab element a
reasonable mode until "ar x" is smart enough to skip it (fixes
gcc/libgcc.a builds on mips-ecoff targets
* coffcode.h (styp_to_sec_flags): Explain how COMDATs are supposed
to work. Hack to support MS import libraries, which use different
COMDAT types than GNU.
(coff_slurp_symbol_table): C_SECTION symbols are local; they refer
to implied zero-length sections (see peicode below)
* coffgen.c (coff_get_normalized_symtab): Properly read long MS
filename symbols, which use one *or more* auxents.
* coffswap.h (coff_swap_aux_in): ditto
* peicode.h (coff_swap_sym_in): Build the implied zero-length
sections