added a way to run OSes as processes

modules/base/virt.lua

@@ -0,0 +1,26 @@
+do
+ local fs=component.proxy(computer.bootAddress())
+ local fi=fs.open("/boot.lua","rb")
+ local nc,ls,ne="","",{}
+ repeat
+  ls=ls..nc
+  nc=fs.read(fi,2048)
+ until nc == "" or nc == nil
+ fs.close(fi)
+ setmetatable(ne,{__index=_G})
+ ne.computer = _G.computer
+ function ne.computer.pullSignal(n)
+  local et = computer.uptime()+n
+  while true do
+   local eT = {C.yield()}
+   if eT ~= {} then
+    return table.unpack(eT)
+   elseif computer.uptime() >= et then
+    break
+   end
+  end
+ end
+ local fscr=load(ls)
+ setfenv(ls,ne)
+ s("virt process",fscr)
+end