update ubuntu info

git-svn-id: https://svn.hdfgroup.uiuc.edu/hdf5/trunk@25478 dab4d1a6-ed17-0410-a064-d1ae371a2980
update ubuntu info

git-svn-id: https://svn.hdfgroup.uiuc.edu/hdf5/trunk@25479 dab4d1a6-ed17-0410-a064-d1ae371a2980