Updated Makefile with latest improvements from lfeunit's Makefile.
Added LFEUNIT_DIR and updated ERL_LIBS.
Updated branches.
Changed the includes to point to lfeunit instead of eunit.

This seems to be a feature that is not yet supported in LFE. There's a ticket
here for discovery:
  https://github.com/oubiwann/lfeunit/issues/10

And a discussion I kicked off here on the mailing list:
  https://groups.google.com/forum/?hl=en-US&fromgroups#!topic/lisp-flavoured-erlang/eJH2m7XK0dM
Merge branch 'master' of github.com:oubiwann/ledis