Make the example config file more abstract-looking
Fixes in XrdOucGMap

The mapping function 'dn2user' returns -EFAULT if no matching is found, the return code
of 'load' in case of other failure.
Make sure that the user buffer is valid and filled with '\0' at first.
Fixes #133 Pass the external environment to the protocol manager.
Update notes on security envar patch.
Make sure to enable core files unless told otherwise via the core
option on the xrd.sched directive.
Update notes regarding xrd.sched core directive.
Allow local/local copying for new xrdcp but not for the old one.
Update notes on xrdcp extension.
Put the original DN into the XrdSecEntity::moninfo field
Refine the user info printing in the html rendering
Merge branch 'master' of https://github.com/xrootd/xrootd