on Solaris.
[SOLARIS2]: Include Xlibint.h.
(x_connection_signal): Access XlibDisplayWriting properly.
No need to sleep--if the flag is set, assume connection is dead.
(describe_command): Sometimes use col 32 for desc.
Record that col in previous_description_column for hysteresis.
(describe_map): Clear out previous_description_column.
New variables.
(syms_of_win32fns): Set up new lisp variables.
(x_set_frame_parameters, x_real_positions, win32_load_font,
win32_abort): Conform to coding style.
(Fwin32_define_rgb_color, Fwin32_load_color_file, Fwin32_map_color,
Fwin32_unmap_color, Fwin32_regenerate_palette): New functions.
(syms_of_win32fns): Set up new lisp subroutines.
(defined_color): Use palettes.
(map_mode): Function removed.
(win32_init_class): Don't CS_OWNDC.
(win32_wnd_proc): Use segregated critical sections appropriately.
Handle WM_PALETTECHANGED.
Record WINDOWPLACEMENT structure length.
(x_to_win32_weight, win32_to_x_weight): Handle "heavy", "extrabold",
"light", "extralight", and "thin" fonts.
(x_to_win32_charset, win32_to_x_charset): New functions.
(win32_to_x_font): Use win32_to_x_charset.
(x_to_win32_font): Use x_to_win32_charset.
Support Windows font names.
(Fx_list_fonts, Fx_display_color_cells, Fx_display_mm_height.
Fx_display_mm_width): Use GetDC directly.
(Fx_open_connection): Support external color mapping files.
(x_iconify_frame): Conform to coding style.
(x_draw_box): Don't trim right and bottom.
(x_wm_set_size_hint): Use specific CRIT_MSG critical section.
(win32_fill_rect, dumpglyphs, do_line_dance, x_draw_box):
Use Get/ReleaseFrameDC.
(win32_update_begin): Regenerate palette if required.
(w32_read_socket): Use FALSE. Handle WM_PALETTECHANGED.
(win32_term_init): Use GetDC directly.
Enable palette in display structure.
Predefine white and black.
(x_delete_display): Free palette table.
(critsect, h_input_available): New variables.
(init_crit, delete_crit): Handle all three critical sections.
(GetFrameDC, ReleaseFrameDC): New functions.
(get_next_msg, post_msg): Use h_input_available.
Use CRIT_MSG critical section.
