cli cmd validation
cli cmd validation

* check buffer/stack overwrite if there is large number of argument to
  gluster command

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

BUG: 1265 ()
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1265

Kaushikbv/Gluster,Kaushikbv/Gluster,Kaushikbv/Gluster