From Gerri: - Improved check of the XrdSysPrivGuard validity - Always export the ROOT version tag to proofserv (it was done only when   different from the default one)
From Gerri:
- Improved check of the XrdSysPrivGuard validity
- Always export the ROOT version tag to proofserv (it was done only when
  different from the default one)


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@18830 27541ba8-7e3a-0410-8455-c3a389f83636

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