[w3m-dev 03559] Re: use select instead of signal for loading images

* fm.h (Buffer): add image_loaded
* image.c (W3M_SIGIMG): deleted
	(image_lock): deleted
	(need_load_image): deleted
	(load_image_handler): deleted
	(load_image_next): deleted
	(getAllImage): check image_loaded
	(loadImage): delete image_lock
		delete IMG_FLAG_NEXT
* main.c (main): check image_loaded
* proto.h (sleep_till_anykey): return int
* terms.c (sleep_till_anykey): return int
From: Hironori SAKAMOTO <hsaka@mth.biglobe.ne.jp>

fm.h

@@ -1,4 +1,4 @@
-/* $Id: fm.h,v 1.95 2002/12/10 15:51:14 ukai Exp $ */
+/* $Id: fm.h,v 1.96 2002/12/11 15:07:53 ukai Exp $ */
 /* 
  * w3m: WWW wo Miru utility
  * 
@@ -458,6 +458,7 @@ typedef struct _Buffer {
     char *ssl_certificate;
 #endif
     char image_flag;
+    char image_loaded;
     char need_reshape;
     Anchor *submit;
     struct _BufferPos *undo;