A patch for "unused parameter" warnings

[Jeffrey A Law]

  In message < 199903182102.QAA11258@caip.rutgers.edu >you write:
  > Thu Mar 18 15:52:02 1999  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
  > 
  > 	* calls.c (initialize_argument_information): Mark parameters
  > 	`num_actuals' and `n_named_args' with ATTRIBUTE_UNUSED.
  > 
  > 	* dbxout.c (dbxout_start_new_source_file): Likewise for parameter
  > 	`filename'.
  > 	(dbxout_finish): Likewise for parameters `file' and `filename'.
  > 	(dbxout_prepare_symbol): Likewise for parameter `decl'.
  > 	(dbxout_begin_function): Likewise.
  > 
  > 	* explow.c (hard_function_value): Likewise for parameter `func'.
  > 
  > 	* function.c (locate_and_pad_parm): Likewise for parameter `fndecl'.
  > 	
  > 	* expmed.c (expand_divmod): Omit unused argument to `expand_abs'.
  > 	* expr.c (expand_expr): Likewise.
  > 	* expr.h (expand_abs): Delete unused argument from prototype.
  > 	* optabs.c (expand_abs): Remove unused parameter `unsignedp'.
  > 
  > 	* sdbout.c (sdbout_init): Mark parameter `syms' with ATTRIBUTE_UNUSED.
  > 	(sdbout_end_block): Likewise for parameter `n'.
  > 	
  > 	* toplev.c (debug_define): Likewise for parameters `lineno' and
  > 	`buffer'.
  > 	(debug_undef): Likewise.
  > 	
  > 	* varasm.c (named_section): Likewise for parameter 'reloc'.
  > 	(assemble_external): Likewise for parameter `decl'.
  > 	(assemble_alias): Likewise for parameter `target'.
Looks fine to me.  Thanks!

jeff