From Gerri: - do not try to connect to the server if 'TCastorFile::FindServerAndPath' fails - force uid/gid authentication as default method in the CERN domain also for   V2 (so far is done for V1 and Ben must have forgotten to do the same check   also for V2).
From Gerri:
- do not try to connect to the server if 'TCastorFile::FindServerAndPath' fails
- force uid/gid authentication as default method in the CERN domain also for
  V2 (so far is done for V1 and Ben must have forgotten to do the same check
  also for V2).


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@14719 27541ba8-7e3a-0410-8455-c3a389f83636

bbannier/ROOT,dawehner/root,dawehner/root,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,dawehner/root,dawehner/root,bbannier/ROOT,bbannier/ROOT,dawehner/root,dawehner/root,bbannier/ROOT,dawehner/root,dawehner/root