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(X_CONNECTION_LOCK_FLAG): Definition deleted.
(x_connection_signal_dpyinfo): Variable deleted.
(x_connection_signal_1): Function deleted.
(x_connection_close_if_hung): Function deleted.

Don't use prefix-args here because Makefile.in
does that when necessary.

before deciding whether it's after the bss section.

handle invisible chars (both text properties and overlays).
(skip_invisible): New function.
(Fmove_to_column): Use skip_invisible.  Get rid of `retry' label.
(compute_motion): Use skip_invisible.
(current_column_1): New function.
(current_column): Use current_column_1 if might have invisible text.

(SYSTEM_TYPE): Changed to gnu/linux.

(win32_kbd_mods_to_emacs): Map Alt to alt_modifier if required.

(win32_get_modifiers): Map Alt to alt_modifier if required.
(syms_of_win32fns): DEFVAR new variable.

no need to process WM_ERASEBKGND.

(syms_of_xmenu): Initialize it.
(menu_item_equiv_key): Check this property on the definition.

not sigblockx and sigunblockx.

(sys_spawnve): Restrict DOS processes on NT as well.

(sys_spawnve): Refer to restrict_dos_process.

(init_ntproc): Refer to restrict_dos_process.

the size of Vkeyboard_translate_table.
Check size for char-table too.

O_NDELAY conditionals out of the EWOULDBLOCK conditional.