* per translator loglevel introduced, if set, it will override process
  wide log level.
* with extended attribute 'trusted.glusterfs.<xlator-name>.set-log-level'
  with the value being '<LOGLEVEL>', one can change log level of particular
  translator.
* with extended attribute 'trusted.glusterfs.syslog' with the value
  '<BOOLEAN>', one can enable disable syslog for gluster

Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 601 (Enable changing 'log-level' of GlusterFS process at runtime)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=601

Now fuse is fully complaint with DVM, as even if there is a fop
request on inode belonging to old graph, it will be resolved
corresponding to new graph and operations will be performed wrt.
new graph, which makes DVM truely spontaneous.

Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 1240 (DVM: after graph change, inodes should resolve to new inode-table)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1240