* lisp/select.el (xselect-convert-to-targets): Add MULTIPLE target to list.
(xselect-convert-to-save-targets): New function.

* src/xselect.c: Support for clipboard managers.
(Vselection_alist): Move to termhooks.h as terminal-local var.
(LOCAL_SELECTION): New macro.
(x_atom_to_symbol): Handle x_display_info_for_display fail case.
(symbol_to_x_atom): Remove gratuitous arg.
(x_handle_selection_request, lisp_data_to_selection_data)
(x_get_foreign_selection, Fx_register_dnd_atom): Callers changed.
(x_own_selection, x_get_local_selection, x_convert_selection): New
arg, specifying work frame.  Use terminal-local Vselection_alist.
(some_frame_on_display): Delete unused function.
(Fx_own_selection_internal, Fx_get_selection_internal)
(Fx_disown_selection_internal, Fx_selection_owner_p)
(Fx_selection_exists_p): New optional frame arg.
(frame_for_x_selection, Fx_clipboard_manager_save): New functions.
(x_handle_selection_clear): Don't treat other terminals with the
same keyboard specially.  Use the terminal-local Vselection_alist.
(x_clear_frame_selections): Use Frun_hook_with_args.

* src/termhooks.h (Vselection_alist): Make it terminal-local.

* src/terminal.c (create_terminal): Initialize it.

* src/xterm.c (x_term_init): Intern ATOM and CLIPBOARD_MANAGER atoms.

* src/xterm.h: Add support for those atoms.

Before, the code sometimes used 'Time', sometimes 'unsigned long',
and sometimes 'EMACS_UINT', to represent these timestamps.  This
change causes it to use 'Time' uniformly, as that's what X uses.
This makes the code easier to follow, and makes it easier to catch
integer overflow bugs such as Bug#8664.
* frame.c (Fmouse_position, Fmouse_pixel_position):
Use Time, not unsigned long, for user-interface timestamps.
* keyboard.c (last_event_timestamp, kbd_buffer_get_event): Likewise.
(button_down_time, make_lispy_position, make_lispy_movement): Likewise.
* keyboard.h (last_event_timestamp): Likewise.
* menu.c (Fx_popup_menu) [!HAVE_X_WINDOWS]: Likewise.
* menu.h (xmenu_show): Likewise.
* term.c (term_mouse_position): Likewise.
* termhooks.h (struct input_event.timestamp): Likewise.
(struct terminal.mouse_position_hook): Likewise.
* xmenu.c (create_and_show_popup_menu, xmenu_show): Likewise.
* xterm.c (XTmouse_position, x_scroll_bar_report_motion): Likewise.
* systime.h (Time): New decl.  Pull it in from <X11/X.h> if
HAVE_X_WINDOWS, otherwise define it as unsigned long, which is
what it was before.
* menu.h, termhooks.h: Include "systime.h", for Time.

(struct vectorlike_header): Rename from struct vector_header.
(XVECTORLIKE_HEADER_SIZE): Renamed from XVECTOR_HEADER_SIZE.
All uses changed.

GCC 4.6.0 optimizes based on type-based alias analysis.  For
example, if b is of type struct buffer * and v of type struct
Lisp_Vector *, then gcc -O2 was incorrectly assuming that &b->size
!= &v->size, and therefore "v->size = 1; b->size = 2; return
v->size;" must therefore return 1.  This assumption is incorrect
for Emacs, since it type-puns struct Lisp_Vector * with many other
types.  To fix this problem, this patch adds a new type struct
vector_header that documents the constraints on layout of vectors
and pseudovectors, and helps optimizing compilers not get fooled
by Emacs's type punning.  It also adds the macros XSETTYPED_PVECTYPE
XSETTYPED_PSEUDOVECTOR, TYPED_PSEUDOVECTORP, for similar reasons.
* lisp.h (XVECTOR_SIZE): New convenience macro.  All previous uses of
XVECTOR (foo)->size replaced to use this macro, to avoid the hassle
of writing XVECTOR (foo)->header.size.
(XVECTOR_HEADER_SIZE): New macro, for use in XSETPSEUDOVECTOR.
(XSETTYPED_PVECTYPE): New macro, specifying the name of the size
member.
(XSETPVECTYPE): Rewrite in terms of new macro.
(XSETPVECTYPESIZE): New macro, specifying both type and size.
This is a bit clearer, and further avoids the possibility of
undesirable aliasing.
(XSETTYPED_PSEUDOVECTOR): New macro, specifying the size.
(XSETPSEUDOVECTOR): Rewrite in terms of XSETTYPED_PSEUDOVECTOR
and XVECTOR_HEADER_SIZE.
(XSETSUBR): Rewrite in terms of XSETTYPED_PSEUDOVECTOR and XSIZE,
since Lisp_Subr is a special case (no "next" field).
(ASIZE): Rewrite in terms of XVECTOR_SIZE.
(struct vector_header): New type.
(TYPED_PSEUDOVECTORP): New macro, also specifying the C type of the
object, to help avoid aliasing.
(PSEUDOVECTORP): Rewrite in terms of TYPED_PSEUDOVECTORP.
(SUBRP): Likewise, since Lisp_Subr is a special case.
* lisp.h (struct Lisp_Vector, struct Lisp_Char_Table):
(struct Lisp_Sub_Char_Table, struct Lisp_Bool_Vector):
(struct Lisp_Hash_Table): Combine first two members into a single
struct vector_header member.  All uses of "size" and "next" members
changed to be "header.size" and "header.next".
* buffer.h (struct buffer): Likewise.
* font.h (struct font_spec, struct font_entity, struct font): Likewise.
* frame.h (struct frame): Likewise.
* process.h (struct Lisp_Process): Likewise.
* termhooks.h (struct terminal): Likewise.
* window.c (struct save_window_data, struct saved_window): Likewise.
* window.h (struct window): Likewise.
* alloc.c (allocate_buffer, Fmake_bool_vector, allocate_pseudovector):
Use XSETPVECTYPESIZE, not XSETPVECTYPE, to avoid aliasing problems.
* buffer.c (init_buffer_once): Likewise.
* lread.c (defsubr): Use XSETTYPED_PVECTYPE, since Lisp_Subr is a
special case.
* process.c (Fformat_network_address): Use local var for size,
for brevity.

* src/dispextern.h (FACE_SUITABLE_FOR_ASCII_CHAR_P): Add missing
definition for no-X builds.

* src/termhooks.h (FRAME_WINDOW_P): Remove duplicated definitions.

* src/xdisp.c (get_next_display_element): Remove unnecessary ifdefs.

(tty_turn_off_highlight, get_tty_terminal, max_frame_cols):
(max_frame_lines, tty_set_terminal_modes):
(tty_reset_terminal_modes, tty_turn_off_highlight):
(get_tty_terminal): Now static.
(term_mouse_moveto): Do not define if HAVE_WINDOW_SYSTEM.
* termhooks.h (term_mouse_moveto): Do not declare if
HAVE_WINDOW_SYSTEMM.
* dispextern.h (tty_set_terminal_modes, tty_reset_terminal_modes):
(tty_turn_off_highlight, get_tty_terminal): Remove decls.