From Gerri:

Writing the documentation I realized that the way GSI certificates
were tested on the server side was non-optimal.

This patch fixes this; in particular it allows non-fully-privileged
servers to use GSI service certificate (ROOT-specific, ldap, ...) if
read permissions are set (before this was possible only for privileged
daemons).


git-svn-id: http://root.cern.ch/svn/root/trunk@11169 27541ba8-7e3a-0410-8455-c3a389f83636