make path search list unique

git-svn-id: https://ekptrac.physik.uni-karlsruhe.de/svn/grid-control/trunk/grid-control@1110 29098800-e21f-4f28-a8ff-84ee76f0ac90
exception now gives instruction to contact the developers

git-svn-id: https://ekptrac.physik.uni-karlsruhe.de/svn/grid-control/trunk/grid-control@1111 29098800-e21f-4f28-a8ff-84ee76f0ac90
wsn

git-svn-id: https://ekptrac.physik.uni-karlsruhe.de/svn/grid-control/trunk/grid-control@1112 29098800-e21f-4f28-a8ff-84ee76f0ac90
renamed path check option to mustExist

git-svn-id: https://ekptrac.physik.uni-karlsruhe.de/svn/grid-control/trunk/grid-control@1113 29098800-e21f-4f28-a8ff-84ee76f0ac90
removed debug statement

git-svn-id: https://ekptrac.physik.uni-karlsruhe.de/svn/grid-control/trunk/grid-control@1114 29098800-e21f-4f28-a8ff-84ee76f0ac90
switched to config path resolver - hiding base path implementation details

git-svn-id: https://ekptrac.physik.uni-karlsruhe.de/svn/grid-control/trunk/grid-control@1115 29098800-e21f-4f28-a8ff-84ee76f0ac90
make 'equal' the new default lookup matcher

git-svn-id: https://ekptrac.physik.uni-karlsruhe.de/svn/grid-control/trunk/grid-control@1116 29098800-e21f-4f28-a8ff-84ee76f0ac90
new config infrastructure

git-svn-id: https://ekptrac.physik.uni-karlsruhe.de/svn/grid-control/trunk/grid-control@1117 29098800-e21f-4f28-a8ff-84ee76f0ac90