Put notes in gtk_window_set_has_frame(), etc. docs about how these are not

Put notes in gtk_window_set_has_frame(), etc. docs about how these are not

2001-09-25  Havoc Pennington  <hp@pobox.com>

	* gtk/gtkwindow.c: Put notes in gtk_window_set_has_frame(),
	etc. docs about how these are not going to do what you want for
	the X/win32 ports. Futile attempt to avoid a FAQ...