2011-05-26  Tristan Gingold  <gingold@adacore.com>
	* symfile.h (struct dwarf2_section_names): New type.
	(struct dwarf2_debug_sections): New type.
	(dwarf2_has_info): Add parameter.
	* dwarf2read.c (dwarf2_elf_names): New variable.
	(INFO_SECTION, ABBREV_SECTION, LINE_SECTION, LOC_SECTION)
	(MACINFO_SECTION, STR_SECTION, RANGES_SECTION, TYPES_SECTION)
	(FRAME_SECTION, EH_FRAME_SECTION, GDB_INDEX_SECTION): Remove.
	(dwarf2_has_info): Add names parameter.  Pass names
	to dwarf2_locate_sections.
	(section_is_p): Rewrite using the names parameter.
	(dwarf2_locate_sections): Use section names from the names parameter.
	* coffread.c (coff_symfile_read): Adjust call to dwarf2_has_info.
	* elfread.c (read_psyms): Ditto.
	* machoread.c (macho_symfile_read): Ditto.