Improved speed of h5list by using quicklook to open HDF5 files. Also acknowledge any exceptions and move on.
Improved speed of h5list by using quicklook to open HDF5 files. Also acknowledge any exceptions and move on.

git-svn-id: 88c9ca70625627825018ef89be83f0d41a8e4cf1@13485 b56c7a7d-ac47-0410-a905-b6f7de78896a

ska-sa/katdal