* path.cc (symlink_info::check): Drop PC_KEEP_HANDLE flag for
	unrecognized reparse points as well.  Reorganize code and comments
	handling reparse points for better readability.
Implement a new command to show GDB build-time configuration parameters.

	* top.c (print_gdb_configuration): New function, displays the
	details about GDB configure-time parameters.
	(print_gdb_version): Mention "show configuration".

	* cli/cli-cmds.c (show_configuration): New function.
	(_initialize_cli_cmds): Add the "show configuration" command.

	* main.c (captured_main) <print_configuration>: New static var.
	<long_options>: Use it.
	If --configuration was given, call print_gdb_configuration.

	* doc/gdb.texinfo (Mode Options): Document '-configuration'.
	(Help): Document "show configuration".
	(Bug Reporting): Add requirements to include the configuration
	details in bug reports.
NEWS: Document 'show configuration'.
	* acconfig.h (_WCHAR_ORIENT): Undef
	* newlib.hin (_WCHAR_ORIENT): Undef
	* configure.in (--enable-newlib-wchar-orient): New option.
	* configure: Regenerated.
	* libc/configure.in (--enable-newlib-wchar-orient): New option.
	* libc/configure: Regenerated.
	* libc/stdio/Makefile.am (NEWLIB_WIDE_ORIENT): Use.
	* libc/stdio/Makefile.in: Regenerated.
	* libc/stdio/local.h (ORIENT): Use _WCHAR_ORIENT to control
	the definition. Add alternative definition.
	* libc/stdio/vfprintf.c (__sfputs_r, __sprint_r): Use _WCHAR_ORIENT
	to control the wide char output.
	* symtab.h (struct general_symbol_info) <value.bytes>: Make const.
	* dwarf2-frame.c (struct comp_unit) <dwarf_frame_buffer>: Now
	const.
	* dwarf2read.c (struct dwarf2_section_info) <buffer>: Now const.
	(struct die_reader_specs) <buffer>: Likewise.
	(die_reader_func_ftype): Make 'info_ptr' const.
	(struct line_header) <include_dirs, statement_program_start,
	statement_program_end>: Now const.
	(struct file_entry) <name>: Likewise.
	(struct partial_die_info) <sibling>: Likewise.
	(struct dwarf_block) <data>: Likewise.
	(dwarf2_read_section): Remove cast.
	(dwarf2_get_section_info): Make 'bufp' const.
	(read_index_from_section): Constify.
	(dw2_get_file_names_reader): Make 'info_ptr' const.
	(dw2_get_primary_filename_reader): Likewise.
	(read_comp_unit_head): Make 'info_ptr' and return type const.
	(read_and_check_comp_unit_head, read_and_check_type_unit_head):
	Likewise.
	(read_abbrev_offset): Constify.
	(dwarf2_create_include_psymtab): Make 'name' const.
	(create_debug_types_hash_table): Update.
	(read_cutu_die_from_dwo): Make 'result_info_ptr' const.
	(init_cutu_and_read_dies, init_cutu_and_read_dies_no_follow):
	Constify.
	(process_psymtab_comp_unit_reader, build_type_psymtabs_reader)
	(load_partial_comp_unit_reader): Make 'info_ptr' const.
	(read_comp_units_from_section): Constify.
	(peek_abbrev_code, peek_die_abbrev, skip_children, skip_one_die)
	(locate_pdi_sibling, load_full_comp_unit_reader): Make 'info_ptr'
	const.
	(dwarf2_compute_name, setup_type_unit_groups): Constify.
	(create_dwo_debug_info_hash_table): Make 'info_ptr' const.
	(create_dwp_hash_table, dwarf2_ranges_read)
	(dwarf2_record_block_ranges): Constify.
	(read_die_and_children, read_die_and_siblings_1)
	(read_die_and_siblings): Make 'info_ptr' and 'new_info_ptr'
	const.
	(read_full_die_1, read_full_die): Make 'info_ptr' const.
	(abbrev_table_read_table): Constify.
	(load_partial_dies): Make 'info_ptr' const.
	(read_partial_die, read_attribute_value, read_attribute): Make
	'info_ptr' and return type const.
	(read_address, read_initial_length)
	(read_checked_initial_length_and_offset, read_offset)
	(read_offset_1, read_n_bytes, read_direct_string): Make 'buf'
	const.
	(read_direct_string): Make 'buf' and return type const.
	(read_indirect_string_at_offset, read_indirect_string_from_dwz)
	(read_indirect_string): Make return type const.
	(read_unsigned_leb128, read_signed_leb128): Make 'buf' const.
	(read_addr_index_from_leb128, dwarf2_read_addr_index_reader): Make
	'info_ptr' const.
	(read_str_index): Make return type const.
	(add_include_dir): Make 'include_dir' const.
	(add_file_name): Make 'name' const.
	(dwarf_decode_line_header): Constify.
	(psymtab_include_file_name): Make return type const.
	(dwarf_decode_lines_1, dwarf_decode_lines): Constify.
	(dwarf2_start_subfile): Make 'filename' const.
	(dwarf2_const_value_attr): Make 'bytes' const.
	(read_signatured_type_reader): Make 'info_ptr' const.
	(decode_locdesc): Constify.
	(skip_form_bytes): Make 'bytes', 'buffer_end', and return type
	const.
	(skip_unknown_opcode): Make 'opcode_definitions', 'mac_ptr',
	'mac_end', and return type const.
	(dwarf_parse_macro_header): Make 'mac_ptr' and return type const.
	(dwarf_decode_macro_bytes): Make 'mac_ptr', 'mac_end', and return
	type const.
	(per_cu_header_read_in): Constify.
	* symfile.h (dwarf2_get_section_info): Update.
gdb/
	* config.in: Regenerate.
gdb/
	Fix GDB regression related to PR binutils/14813.
	* jit.c (mem_bfd_iovec_close): Return 0 for success.
	* minidebug.c (lzma_close): Add return value comment.
	* remote.c (remote_bfd_iovec_close): Return 0 for success.
	* solib-spu.c (spu_bfd_iovec_close): Likewise.
	* spu-linux-nat.c (spu_bfd_iovec_close): Likewise.
Clean up "show configuration" entry.
Re: "show configuration"/--configuration patch: mention --configuration too.
gdb/doc/
	* gdb.texinfo (Auto-loading safe path): Add quick -iex using command
	line below the sample output.
2013-04-12  Will Newton  <will.newton@linaro.org>

        * libc/machine/arm/memcpy-stub.c: Use generic memcpy if unaligned
        access is not enabled.
        * libc/machine/arm/memcpy.S: Faster memcpy implementation for
        Cortex A15 cores using NEON and VFP if available.
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