bfd_get_filename

This macro says:
/* Cast from const char * to char * so that caller can assign to
   a char * without a warning.  */

I reckon that isn't such a good idea since it can result in char*
variables where const char* is appropriate.  Not very many places
need the char* cast.

bfd/
	* aout-target.h (object_p): Formatting.
	* bfd-in.h (bfd_get_filename): Don't cast to char*.
	* corefile.c (generic_core_file_matches_executable_p): Constify
	variables and remove cast.
	* bfd-in2.h: Regenerate.
binutils/
	* nm.c (print_object_filename_bsd, print_object_filename_sysv),
	(print_object_filename_posix, print_archive_filename_bsd),
	(print_archive_filename_sysv, print_archive_filename_posix),
	(print_archive_member_bsd, print_archive_member_sysv),
	(print_archive_member_posix): Constify parameter.
	(struct output_fns <print_object_filename, print_archive_filename>),
	(<print_archive_member>): Likewise.
	* objcopy.c (copy_archive): Add cast for make_tempdir.
ld/
	* emultempl/elf32.em (gld${EMULATION_NAME}_search_needed): Constify
	variable.
	* emultempl/pe.em (gld_${EMULATION_NAME}_after_open): Likewise.
	* emultempl/pep.em (gld_${EMULATION_NAME}_after_open): Likewise.
gdb/
	* coffread.c (coff_symfile_read): Constify filename variable.
	* dbxread.c (dbx_symfile_init, coffstab_build_psymtabs),
	(elfstab_build_psymtabs, stabsect_build_psymtabs): Likewise.
	* gdb_bfd.c (gdb_bfd_close_or_warn): Likewise.
	* solib.c (reload_shared_libraries_1): Likewise.
	* symfile.c (reread_symbols): Likewise.
	* solib-aix.c (solib_aix_bfd_open): Add cast for xfree of filename.
	* solib-darwin.c (darwin_bfd_open): Likewise.
	* symfile-mem.c (symbol_file_add_from_memory): Likewise.
sim/cris/
	* sim-if.c (sim_open): Constify filename variable.

gdb/gdb_bfd.c

@@ -504,7 +504,7 @@ static int
 gdb_bfd_close_or_warn (struct bfd *abfd)
 {
   int ret;
-  char *name = bfd_get_filename (abfd);
+  const char *name = bfd_get_filename (abfd);
 
   bfd_map_over_sections (abfd, free_one_bfd_section, NULL);