patch to nm allows nm to differentiate between weak functions and weak objects

[Thomas de Lellis <tdel at windriver dot com>]

We need to distiguish in an nm dump listing between symbols
that are weak functions and symbols that are weak objects. nm
only dumped weak syms without making the distinction. A new "letter"
was added "V/v" to show weak objects...
======================================================================
2000-01-10  Thomas de Lellis  <tdel@wrs.com>

        * syms.c (bfd_decode_symclass)
        Two new class characters were added - 'V' and 'v'. The
        meaning of 'W' is now restricted to just weak functions.
        nm for example now dumps:
        'W' = weak global function
        'w' = weak unresolved function
        'V' = weak global object
        'v' = weak unresolved object

======================================================================
*** syms.c@@/main/3	Mon Oct  4 13:46:29 1999
--- syms.c	Mon Jan 24 19:10:27 2000
*************** bfd_decode_symclass (symbol)
*** 579,592 ****
    if (bfd_is_und_section (symbol->section))
      {
        if (symbol->flags & BSF_WEAK)
! 	return 'w';
        else
  	return 'U';
      }
    if (bfd_is_ind_section (symbol->section))
      return 'I';
!   if (symbol->flags & BSF_WEAK)
!     return 'W';
    if (!(symbol->flags & (BSF_GLOBAL | BSF_LOCAL)))
      return '?';
  
--- 579,606 ----
    if (bfd_is_und_section (symbol->section))
      {
        if (symbol->flags & BSF_WEAK)
! 	{
! 	  if (symbol->flags & BSF_FUNCTION)
! 	    return 'w';
! 	  else if (symbol->flags & BSF_OBJECT)
!           return 'v';
! 	}
        else
  	return 'U';
      }
    if (bfd_is_ind_section (symbol->section))
      return 'I';
!   if (symbol->flags & BSF_WEAK) 
!     {
!       /*
! 	W = weak function
! 	V = weak object
!        */
!     if (symbol->flags & BSF_FUNCTION)
!       return 'W';
!     else if (symbol->flags & BSF_OBJECT)
! 	return 'V';
!     }
    if (!(symbol->flags & (BSF_GLOBAL | BSF_LOCAL)))
      return '?';