daily update
	* binutils-all/nm.exp: Xfail test for nm --size-sort for
	mmix-knuth-mmixware.
merge from gcc
	* doublest.c (convert_floatformat_to_doublest): Use fmt->split_half
	for IBM long double nan and inf.
	(floatformat_is_negative, floatformat_classify,
	floatformat_mantissa): Similarly.
	(floatformat_ieee_single, floatformat_ieee_double,
	floatformat_ieee_quad, floatformat_arm_ext,
	floatformat_ia64_spill): Delete unused vars.
	(_initialize_doublest): Delete unused function.
	* gdbtypes.c (floatformats_ibm_long_double): Use new big- and
	little-endian variants of floatformat_ibm_long_double.
move gdbarch object from objfile to per-BFD

This moves the "gdbarch" field from the objfile into the BFD.

This field's value is derived from the BFD and is immutable over the
lifetime of the BFD.  This makes it a reasonable candidate for pushing
into the per-BFD object.

This is part of the long-term objfile splitting project.  In the long
run I think this patch will make it simpler to moves types from the
objfile to the per-BFD object; but the patch makes sense as a minor
cleanup by itself.

Built and regtested on x86-64 Fedora 18.

	* cp-namespace.c (cp_lookup_symbol_imports_or_template): Use
	get_objfile_arch.
	* elfread.c (elf_rel_plt_read, elf_gnu_ifunc_record_cache)
	(elf_gnu_ifunc_resolve_by_got): Use get_objfile_arch.
	* jit.c (jit_object_close_impl): Update.
	* jv-lang.c (get_dynamics_objfile): Update.
	* linespec.c (add_minsym): Use get_dynamics_objfile.
	* objfiles.c (get_objfile_bfd_data): Initialize 'gdbarch' field.
	(allocate_objfile): Don't initialize 'gdbarch' field.
	(get_objfile_arch): Update.
	* objfiles.h (struct objfile_per_bfd_storage) <gdbarch>: New field,
	moved from...
	(struct objfile) <gdbarch>: ... here.  Remove.
	* stap-probe.c (stap_can_evaluate_probe_arguments): Use
	get_objfile_arch.
	* symfile.c (init_entry_point_info): Use get_objfile_arch.
fix PR python/15816

This fixes PR python/15816.

The bug here is that python-selftest.exp can fail:

    No symbol "RETURN_MASK_ALL" in current context.

RETURN_MASK_ALL is a macro, so if macros do not end up in the
debuginfo (very typical) then the test fails.

It seemed simplest to me to simply turn the RETURN_MASK_ defines into
enum constants.  This way they end up in the debuginfo and all is
well.

	PR python/15816:
	* exceptions.h (return_mask): Now an enum.
	(RETURN_MASK_QUIT, RETURN_MASK_ERROR, RETURN_MASK_ALL): Now
	enum constants.

Built and regtested on x86-64 Fedora 18.
	* blockframe.c: Remove #include "psymtab.h".
	* cp-support.c: Ditto.
	* source.c: Ditto.
	* stack.c: Ditto.
	* dbxread.c (record_minimal_symbol): Make 'name' argument const.
	Update.
	(read_dbx_dynamic_symtab): Make 'name' const.  Remove casts.
	* buildsym.c (subfile_stack): Move here from buildsym.h.
	(pending_macros): Ditto.
	(get_macro_table): New function.
	(buildsym_init): Initialize subfile_stack.
	* coffread.c (type_vector,type_vector_length): Moved here from
	buildsym.h.
	(INITIAL_TYPE_VECTOR_LENGTH): Ditto.
	(coff_symtab_read): Use it.
	* dbxread.c (read_ofile_symtab): Delete init of subfile_stack.
	* dwarf2read.c (macro_start_file): Replace uses of pending_macros
	with call to get_macro_table.
	* stabsread.c (type_vector,type_vector_length): Moved here from
	buildsym.h.
	(INITIAL_TYPE_VECTOR_LENGTH): Ditto.
	* buildsym.h (get_macro_table): Declare.
	* fhandler_tape.cc (mtinfo_drive::create_partitions): Fix long-standing
	bug disabling creation of two partitions on drives supporting initiator
	partitions.
	(mtinfo_drive::set_blocksize): Update media information after setting
	blocksize succeeded.
	(mtinfo_drive::get_status): Fetch fresh media information.