Remove most uses of ALL_OBJFILES

Remove most uses of ALL_OBJFILES

This removes most uses of ALL_OBJFILES, replacing them with ranged for
loops.  The remaining uses are all in macros, and will be removed in
subsequent patches.

gdb/ChangeLog
2019-01-09  Tom Tromey  <tom@tromey.com>

	* symtab.c (iterate_over_symtabs, matching_obj_sections)
	(expand_symtab_containing_pc, lookup_static_symbol)
	(basic_lookup_transparent_type, find_pc_sect_compunit_symtab)
	(find_symbol_at_address, find_line_symtab, find_main_name): Use
	all_objfiles.
	* probe.c (find_probe_by_pc, collect_probes): Use all_objfiles.
	* breakpoint.c (create_overlay_event_breakpoint)
	(create_longjmp_master_breakpoint)
	(create_std_terminate_master_breakpoint)
	(create_exception_master_breakpoint): Use all_objfiles.
	* linux-thread-db.c (try_thread_db_load_from_pdir)
	(has_libpthread): Use all_objfiles.
	* ada-lang.c (add_nonlocal_symbols): Use all_objfiles.
	* linespec.c (iterate_over_all_matching_symtabs)
	(search_minsyms_for_name): Use all_objfiles.
	* maint.c (maintenance_info_sections): Use all_objfiles.
	* main.c (captured_main_1): Use all_objfiles.
	* spu-tdep.c (spu_objfile_from_frame): Use all_objfiles.
	* guile/scm-objfile.c (gdbscm_objfiles): Use all_objfiles.
	* guile/scm-pretty-print.c
	(ppscm_find_pretty_printer_from_objfiles): Use all_objfiles.
	* solib-spu.c (append_ocl_sos): Use all_objfiles.
	* symmisc.c (maintenance_print_symbols): Use all_objfiles.
	(maintenance_print_msymbols): Use all_objfiles.
	* source.c (select_source_symtab): Use all_objfiles.
	* jit.c (jit_find_objf_with_entry_addr): Use all_objfiles.
	* symfile.c (remove_symbol_file_command)
	(expand_symtabs_matching, map_symbol_filenames): Use
	all_objfiles.
	* ppc-linux-tdep.c (ppc_linux_spe_context_inferior_created): Use
	all_objfiles.
	* dwarf2-frame.c (dwarf2_frame_find_fde): Use all_objfiles.
	* objc-lang.c (find_methods): Use all_objfiles.
	* objfiles.c (have_partial_symbols, have_full_symbols)
	(have_minimal_symbols, qsort_cmp)
	(default_iterate_over_objfiles_in_search_order): Use
	all_objfiles.
	* hppa-tdep.c (find_unwind_entry): Use all_objfiles.
	* psymtab.c (maintenance_print_psymbols): Use all_objfiles.
	(maintenance_check_psymtabs): Use all_objfiles.
	(ALL_PSYMTABS): Remove.
	* compile/compile-object-run.c (do_module_cleanup): Use
	all_objfiles.
	* blockframe.c (find_pc_partial_function): Use all_objfiles.
	* cp-support.c (add_symbol_overload_list_qualified): Use
	all_objfiles.
	* windows-tdep.c (windows_iterate_over_objfiles_in_search_order):
	Use all_objfiles.
	* dwarf-index-write.c (save_gdb_index_command): Use all_objfiles.
	* python/py-xmethods.c (gdbpy_get_matching_xmethod_workers): Use
	all_objfiles.
	* python/py-objfile.c (objfpy_lookup_objfile_by_name)
	(objfpy_lookup_objfile_by_build_id): Use all_objfiles.
	* python/py-prettyprint.c (find_pretty_printer_from_objfiles):
	Uses all_objfiles.
	* solib.c (solib_read_symbols): Use all_objfiles