add failure count for client rendering, drop clients after FAILURE_MAX tries
add failure count for client rendering, drop clients after FAILURE_MAX tries

this traps clients which are showing and hiding themselves extremely quickly and prevents them from crashing us when we try to draw them

fix T1820

tizenorg/platform.upstream.enlightenment,tasn/enlightenment,tasn/enlightenment,tasn/enlightenment,rvandegrift/e,tizenorg/platform.upstream.enlightenment,rvandegrift/e,FlorentRevest/Enlightenment,tizenorg/platform.upstream.enlightenment,rvandegrift/e,FlorentRevest/Enlightenment,FlorentRevest/Enlightenment