Update lfetool to use new lcfg library

Created by: oubiwann

lutil-cfg is getting split out into its own library (see ticket https://github.com/lfex/lutil/issues/31). As soon as that happens, lfetool dev-v1 should be updated to use it instead of lutil (for the bootstrapping).

Imported comments:

By oubiwann on 2015-01-07 20:37:07 UTC

Done in 367c379f.

By oubiwann on 2015-01-07 20:38:00 UTC

Tested and confirmed working.