Fix call to install-dependencies.

If the current user running install-dependencies is not in the
libvirtd group, the user is added and install-dependencies is
reran.  This patch calls install-dependencies with $0 instead
of $PWD/$0.  There is no gaurantee that that the current working
directory is the scripts directory, so using $PWD/$0 could result
in an error.

Change-Id: I67e7eeaba365ded8fcaa1ba6b48d6759e90d5222
Added changes to accommodate rename of incubator.

Made changes to documentation and scripts to accommodate the changes
required as part of moving the module incubator from stackforge to
openstack.

Change-Id: I41cc86d2792c6e8f9d2f01936f252daf4d407bc9