Applied vodz' patches #49 and #50 (with a small correction in runshell.c)

#49: I found one memory overflow and memory leak in "ln" applet.
Last patch reduced also 54 bytes. ;)

#50: I found bug in loginutils/Makefile.in.
New patch have also new function to libbb and
aplied this to applets and other cosmetic changes.

libbb/xreadlink.c

@@ -24,7 +24,7 @@ extern char *xreadlink(const char *path)
 		buf = xrealloc(buf, bufsize += GROWBY);
 		readsize = readlink(path, buf, bufsize); /* 1st try */
 		if (readsize == -1) {
-		    perror_msg("%s:%s", applet_name, path);
+                   perror_msg("%s", path);
 		    return NULL;
 		}
 	}           
@@ -34,4 +34,3 @@ extern char *xreadlink(const char *path)
 
 	return buf;
 }       
-