point libogre-dev to libogre-1.8-dev for Saucy

it appears that libogre-dev on Saucy points to libogre-1.7.4 which needs boost 1.49, which doesn't work with the many other packages we have which use boost 1.53
Merge pull request #2552 from codebot9000/patch-1

point libogre-dev to libogre-1.8-dev for Saucy