* dwarf2read.c (line_header): Add new included_p field in

    * dwarf2read.c (line_header): Add new included_p field in
        field file_names.
        (partial_die_info): New field has_stmt_list. New field line_offset.
        (dwarf2_create_include_psymtab): New function.
        (dwarf2_build_include_psymtabs): New function.
        (add_file_name): Add forward declaration. Initialize new field.
        (dwarf_decode_lines): Add new parameter. Enhance this procedure
        to be able to determine the list of files included by the
        given unit, and build their associated psymtabs.
        (dwarf2_build_psymtabs_hard): Build the psymtabs for the included
        files as well.
        (psymtab_to_symtab_1): Build the symtabs of all dependencies as well.
        (read_file_scope): Update call to dwarf_decode_lines.
        (read_partial_die): Handle DW_AT_stmt_list attributes.