cat and cp need to exit if a signal is recieved

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3323 42af7a65-404d-4744-a932-0658087f49c3

examples/nsh/nsh_main.c

@@ -358,6 +358,9 @@ const char g_fmtcmdfailed[]      = "nsh: %s: %s failed: %d\n";
 #endif
 const char g_fmtcmdoutofmemory[] = "nsh: %s: out of memory\n";
 const char g_fmtinternalerror[]  = "nsh: %s: Internal error\n";
+#ifndef CONFIG_DISABLE_SIGNALS
+const char g_fmtsignalrecvd[]    = "nsh: %s: Signal received\n";
+#endif
 
 /****************************************************************************
  * Private Functions