Upstream version 2.8.0

# gpg: Signature made Thu Jul 25 11:20:08 2013 JST using RSA key ID 31496D58
# gpg: Good signature from "Thomas Moulard <thomas.moulard@gmail.com>"
# gpg:                 aka "[jpeg image of size 1485]"

This reverts partially revert commit
6994be42.

Tests should not be disabled through the use of
DEB_BUILD_OPTIONS=nocheck.

Doxygen documentation is now generated in build-indep.

Test suite is disabled via the nocheck option and not through
overriding the override_dh_autotest target.