fixes in stripe
fixes in stripe

* fix in stripe readv, so that a read request which falls in
  two (or more) subvolumes, depending on stripe-size works fine.
* fix in stripe_setattr_cbk, where 'postop' stat structure was
  returning wrong 'st_size'.

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

BUG: 368 (setattr on a non-regular file makes glusterfs crash)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=368

Kaushikbv/Gluster,Kaushikbv/Gluster,Kaushikbv/Gluster