version 2.0b7 (the last commit tagged as version 2.0b6 is incorrect, it is 2.0b7 apart from the configure.ac erroneous version number)

git-svn-id: https://scm.gforge.inria.fr/authscm/cfourrie/svn/lingwb/MElt/trunk@5556 dc05b511-7f1d-0410-9f1c-d6f32a2df9e4