Add basic documentation of the error classad attributes
Move discovery of proxy time earier in the process
Add a tmp value for X509_GRIDMAP_TRUSTED_DNS early on as it is needed in condor_startup.sh
Set permissive X509_GRIDMAP_TRUSTED_DNS by default
Merge branch 'branch_v3plus_igor_2454_v2' into branch_v3_2plus_igor_4657