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/xconnect.c

@@ -6,6 +6,7 @@
  *
  */
 
+#include "inet_common.h"
 #include <unistd.h>
 #include <string.h>
 #include <stdlib.h>