removed unarchive from the mtar library, wasn't meant to be in there anyway

lib/libmtar.lua

@@ -1,24 +1,5 @@
 local mtar = {}
 
--- detect OS hopefully
-if _OSVERSION then
- if _OSVERSION:sub(1,8) == "OpenOS" then
-  OPENOS = true
- elseif _OSVERSION:sub(1,9) == "PsychOS" then
-  PSYCHOS = true
- end
-else
- LINUX = true
-end
-
-local function mkdir(dir)
- if OPENOS or LINUX then
-  os.execute("mkdir "..dest.."/"..dir.." &> /dev/null")
- elseif PSYCHOS then
-  -- todo: write PsychOS support
- end
-end
-
 local function toint(s)
  local n = 0
  local i = 1
@@ -74,39 +55,4 @@ function mtar.iter(stream) -- table -- function -- Given buffer *stream*, return
  end
 end
 
-function mtar.unarchive(stream,dest,verbose) -- Extract mtar archive read from *stream* to *dest*. If *verbose*, print status.
- dest = dest or "."
- while true do
-  local nlen = toint(stream:read(2) or "\0\0")
-  if nlen == 0 then
-   break
-  end
-  local name = cleanPath(stream:read(nlen))
-  local fsize = toint(stream:read(2))
-  if verbose then
-   io.write(name.." "..tostring(fsize).."... ")
-  end
-  local dir = name:match("(.+)/.*%.?.+")
-  if (dir) then
-   mkdir(dir)
-  end
-  local f = io.open(dest.."/"..name,"wb")
-  local rsize,buf = fsize, ""
-  if f then
-   repeat
-    buf = stream:read(math.min(rsize,2048))
-    f:write(buf)
-    rsize = rsize - buf:len()
-    if verbose then
-     io.write(tostring(rsize).." ")
-    end
-   until rsize <= 1
-   f:close()
-  end
-  if verbose then
-   print("done.")
-  end
- end
-end
-
 return mtar