if the gcc '__attribute__ ((name))' compiles ok.
* config.h.in, configure: Regenerated.
* libdwarfdefs.h: Test HAVE_UNUSED_ATTRIBUTE and define
UNUSEDARG appropriately.
* dwarf_alloc.c,dwarf_elf_access.c,dwarf_form.c,dwarf_frame2.c,
dwarf_gdbindex.c,dwarf_global.c,dwarf_init_finish.c,dwarf_line.c,
dwarf_line_table_reader_common.c,dwarf_macro5.c,
dwarf_original_elf_init.c,dwarf_print_lines.c,dwarf_ranges.c,
dwarf_tsearchhash.c,dwarf_util.c,dwarf_xu_index.c,
pro_alloc.c,pro_frame.c,pro_init.c,pro_reloc.c,
pro_reloc_stream.c,pro_section.c: Use UNUSEDARG to suppress
meaningless unused-parameter warnings from gcc.
indentation. No interfaces changed. One new and
not very significant (to most people) interface added which
returns a count of abbreviations in an abbreviation section.
Copyrights updated for 2011.