Added new filter to code.c, to convert between line conventions.

etc/eol.lua

@@ -0,0 +1,9 @@
+marker = {['-u'] = '\10', ['-d'] = '\13\10'}
+arg = arg or {'-u'}
+marker = marker[arg[1]] or marker['-u']
+local convert = socket.code.canonic(marker)
+while 1 do
+    local chunk = io.read(4096)
+    io.write(convert(chunk))
+    if not chunk then break end
+end