+2013-01-22 Dmitry Antipov <dmantipov@yandex.ru>
+
+ * window.h (struct window): Change window_end_valid member from
+ Lisp_Object to a bitfield. Adjust comments.
+ (wset_window_end_valid): Remove.
+ * window.c (adjust_window_count): Clear window_end_valid.
+ (Fwindow_end): Adjust user. Remove ancient #if 0 code.
+ (Fwindow_line_height, set_window_buffer, Frecenter)
+ (Fsplit_window_internal, Fdelete_other_windows_internal)
+ (Fset_window_fringes, Fset_window_scroll_bars): Adjust users.
+ * dispnew.c (adjust_glyph_matrix, clear_window_matrices): Likewise.
+ * xdisp.c (check_window_end, reconsider_clip_changes)
+ (redisplay_internal, mark_window_display_accurate_1, redisplay_window)
+ (try_window, try_window_reusing_current_matrix, note_mouse_highlight)
+ (find_first_unchanged_at_end_row, try_window_id): Likewise.
+
2013-01-22 Dmitry Antipov <dmantipov@yandex.ru>
* xdisp.c (mark_window_display_accurate): Simplify the loop