Add stackdump and fix socktest for mipsel

socktest.c

@@ -9,7 +9,7 @@ int main() {
 	server.sin_family = AF_INET;
 	server.sin_addr.s_addr = INADDR_ANY;
 
-  #if defined(__mips__)
+  #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
 	server.sin_port = 6969;
   #else
 	server.sin_port = 0x391b;