Fixed dashed line issues (#74441) to an IMO reasonable extend. That is:

Fixed dashed line issues (#74441) to an IMO reasonable extend. That is:

2002-03-29  Hans Breuer  <hans@breuer.org>

	Fixed dashed line issues (#74441) to an IMO reasonable extend.
	That is: use PS_USERSTYLE on WinNT (the next GDI limit appears
	to be with lines width > 50); Render horizontal and vertical
	dashed lines on Win9x 'by hand'. Dotted selection rectangles
	and Dia look nice ...

	* gdk/win32/gdkprivate-win32.h : add pen_dashes pointer and
	num_pen_dashes to _GdkGCWin32
	* gdk/win32/gdkgc-win32.c : initialize pen_dashes and remove
	the guesses from dashes to windoze line styles.
	(predraw_set_forground) : always ExtCreatePen (PS_SOLID) on
	Win9x, which does not support PS_USERSTYLE.
	* gdk/win32/gdkdrawable-win32.c : new functions render_line_
	<horizontal|vertical>. Use them if not running on NT in
	gdk_win32_draw_<rectangle|segments|lines> ()

	* gdk/win32/gdkkeys-win32.c (gdk_keyval_name) : return NULL
	for keyval == 0 to avoid to have zeros in all menu entries
	without accelerator.