added some modules to run nsh and a file at startup \o/

modules/util/autoexec.lua

@@ -0,0 +1,7 @@
+do
+ local f=io.open("/boot/autoexec.lua")
+ if f then
+  pcall(load(f:read("*a")))
+  f:close()
+ end
+end

modules/util/autonsh.lua

@@ -0,0 +1,3 @@
+_G.pass = "PASSWORD"
+nshd("nsh")
+nshds("nshs",pass)