new JobOptionsSvc

This is a bugfix release with just a couple of minor backward compatible improvements.

We also updated the LCG baseline version to [LCG 97a](http://lcginfo.cern.ch/release/97a/) (ROOT 6.20/06).

This is the last release with the legacy CMake configuration. From the next release (v34r0)
we will use a modern CMake configuration (see gaudi/Gaudi!922 and gaudi/Gaudi!986 for details).