If a hash is reported to the hash server, the stamp written out by the
current task didn't account for any new hash the server may have provided.
Fix this so the correct stamp is written. This means "bitbake X; bitbake X"
no longer rebuilds lots of things when hashequiv is active.
(Bitbake rev: 4299afdd290f9d1c5616598f5fe83c195a64b63c)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>