* src/w32xfns.c: Don't include keyboard.h, window.h, charset.h,
fontset.h, blockinput.h.
* src/w32uniscribe.c: Don't include dispextern.h, character.h,
charset.h, fontset.h.
* src/w32term.c: Don't include systty.h, systime.h, charset.h,
character.h, ccl.h, dispextern.h, disptab.h, intervals.h,
process.h, atimer.h, keymap.h, w32heap.h.  Include bitmap/gray.xbm
in an ifdef-ed away block.
Include fcntl.h for CYGWIN.
(set_frame_param): Remove unused function.
* src/w32select.c: Don't include charset.h and composite.h.
(setup_config, Fw32_get_clipboard_data): Avoid compiler warnings
due to pointer signedness mismatches.
* src/w32reg.c (w32_get_string_resource): Avoid compiler warnings
due to pointer signedness mismatches.
* src/w32proc.c: Include unistd.h.  Don't include systime.h,
process.h, dispextern.h.
(sys_spawnve, Fw32_short_file_name, Fw32_long_file_name)
(Fw32_application_type): Avoid compiler warnings due to pointer
signedness mismatches.
* src/w32menu.c: Don't include keymap.h, termhooks.h, window.h,
character.h, charset.h, dispextern.h.
(simple_dialog_show, add_menu_item): Avoid compiler warnings due
to pointer signedness mismatches.
* src/w32inevt.c: Don't include dispextern.h, window.h,
termhooks.h, w32heap.h.
* src/w32font.c: Don't include dispextern.h, character.h,
charset.h, fontset.h, font.h.
(intern_font_name, add_font_entity_to_list)
(registry_to_w32_charset, w32_to_x_charset, fill_in_logfont)
(list_all_matching_fonts): Avoid compiler warnings due to pointer
signedness mismatches.
* src/w32fns.c: Don't include character.h, intervals.h,
dispextern.h, epaths.h, charset.h, ccl.h, fontset.h, systime.h,
termhooks.h, w32heap.h, bitmap/gray.xbm, font.h, w32font.h.
(w32_color_map_lookup, add_system_logical_colors_to_map)
(x_decode_color, x_set_name, FPRINTF_WM_CHARS, Fxw_color_defined_p)
(Fxw_color_values, x_display_info_for_name, Fset_message_beep)
(x_create_tip_frame, Fx_file_dialog, Fsystem_move_file_to_trash)
(w32_parse_hot_key, Ffile_system_info, w32_kbd_patch_key): Avoid
compiler warnings, mainly due to pointer signedness mismatches.
(unwind_create_frame_1): Remove unused function.
* src/w32console.c: Don't include character.h, disptab.h, frame.h,
window.h, termhooks.h, dispextern.h.
(w32con_write_glyphs, w32con_write_glyphs_with_face): Fix pointer
signedness mismatch.
* src/w32.c: Include c-strcase.h and systty.h.  Don't include
w32heap.h.

 src/w32proc.c, src/w32.h, src/w32fns.c, src/w32font.c, src/w32menu.c:
 src/w32notify.c, src/w32proc.c, src/w32select.c, src/w32term.c:
 src/w32uniscribe.c: Remove declarations of Q* variables that
 represent symbols.

Run admin/update-copyright.

and make it generic instead by relying on the lower-level selection
management functions.

* select.el (select-enable-clipboard): Rename from
gui-select-enable-clipboard.
(select-enable-primary): Move from x-win.el and rename from
x-select-enable-primary.
(gui-last-selected-text): Remove.
(gui--last-selected-text-clipboard, gui--last-selected-text-primary):
New vars.
(gui-select-text): Rewrite, based on x-win.el's old x-select-text.
(gui-select-text-alist, gui-selection-value-alist): Remove.
(x-select-request-type): Move from x-win.el.
(gui--selection-value-internal): New function, taken from x-win's
x-selection-value-internal.
(gui-selection-value): Rewrite, based on x-win.el's old x-selection-value.
(gui-set-selection-alist): Rename from gui-own-selection-alist and
extend it to handle a nil value as a "disown" request.
(gui-disown-selection-alist): Remove.
(xselect-convert-to-delete): Adjust accordingly.
(gui-set-selection): Simplify accordingly as well.  Use dotimes.

* lisp/frame.el (gui-method): Use window-system rather than framep.
(gui-method-declare): The tty case is now nil rather than t.
(make-frame): Adjust accordingly.

* lisp/term/x-win.el (x-last-selected-text-primary)
(x-select-enable-primary): Remove (moved to select.el).
(x-select-request-type): Move to select.el.
(x-selection-value-internal, x--selection-value): Remove functions.
(gui-selection-value, gui-select-text): Remove moethods.
(gui-set-selection): Merge own and disown methods.

* lisp/startup.el (command-line): Adjust now that `gui-method' expects nil
for ttys.

* lisp/term/ns-win.el (ns-get-pasteboard, ns-set-pasteboard)
(ns-selection-value): Remove functions.
(gui-select-text, gui-selection-value): Don't define method any more.
(gui-set-selection): Merge the old own and disown methods.
(gui-selection-exists-p, gui-get-selection): Adjust to new name of
underlying C primitive.

* lisp/term/pc-win.el (w16-get-selection-value): Add dummy argument and drop
test of gui-select-enable-clipboard, to make it usable as
a gui-get-selection method.
(gui-selection-exists-p): Adjust to new name of C primitive.
(gui-set-selection): Merge own and disown methods.
(gui-select-text, gui-selection-value): Delete methods.
(w16--select-text): Delete function.

* lisp/term/w32-win.el (w32--select-text, w32--get-selection-value):
Delete function (move functionality into w32--set-selection and
w32--get-selection).
(gui-select-text, gui-selection-value): Don't define methods.
(w32--set-selection, w32--get-selection, w32--selection-owner-p):
New functions.
(gui-get-selection, gui-selection-owner-p, gui-selection-exists-p):
Use them.
(gui-selection-exists-p): Adjust to new name of C primitive.

* src/nsselect.m (ns_get_local_selection): Signal error rather than `quit'.
(Fns_own_selection_internal): Tighten scoping.
(Fns_selection_exists_p): Rename from Fx_selection_exists_p.
(Fns_get_selection): Rename from Fx_get_selection_internal.
(Fns_get_selection_internal, Fns_store_selection_internal):
Remove functions.
(syms_of_nsselect): Adjust accordingly.

* src/w16select.c (Fw16_selection_exists_p): Rename from
Fx_selection_exists_p.
(syms_of_win16select): Adjust accordingly.

* src/w32select.c (Fw32_selection_exists_p): Rename from
Fx_selection_exists_p.
(syms_of_w32select): Adjust accordingly.

 src/w32select.c (owner_callback): Mark with ALIGN_STACK attribute.

 src/w32select.c (setup_windows_coding_system): Apply
 CODING_ANNOTATION_MASK to the common_flags member of struct
 coding_system.  Reported by Martin Rudalics <rudalics@gmx.at>.
 src/w16select.c (Fw16_get_clipboard_data): Apply
 CODING_ANNOTATION_MASK to the common_flags member of struct
 coding_system.

 src/w32select.c: Include w32common.h before w32term.h, so that
 windows.h gets included before w32term.h uses some of its
 features, see below.
 src/w32term.h (LOCALE_ENUMPROCA, LOCALE_ENUMPROCW) [_MSC_VER]: New
 typedefs.
 (EnumSystemLocalesA, EnumSystemLocalesW) [_MSC_VER]: New
 prototypes.
 (EnumSystemLocales) [_MSC_VER]: Define if undefined.

instead of having a wrong decl.