Set peer_needs_sync_items_from_us to false if our head block is anywhere in their blockchain_synopsys (previously code required that it be the last block in their synopsys, which was wrong).
Set peer_needs_sync_items_from_us to false if our head block is anywhere in their blockchain_synopsys (previously code required that it be the last block in their synopsys, which was wrong).

(cherry picked from commit 7c76ebfdca63df9ccdfb9e1c6d08a122a95fee4b)

bitshares/bitshares-0.x,FollowMyVote/bitshares,frrp/bitshares,frrp/bitshares,frrp/bitshares,bitshares/bitshares,bitshares/bitshares-0.x,camponez/bitshares,bitshares/bitshares,frrp/bitshares,camponez/bitshares,FollowMyVote/bitshares,FollowMyVote/bitshares,bitshares/bitshares-0.x,frrp/bitshares,jakeporter/Bitshares,camponez/bitshares,bitshares/bitshares,jakeporter/Bitshares,bitshares/bitshares-0.x,FollowMyVote/bitshares,bitshares/bitshares-0.x,jakeporter/Bitshares,FollowMyVote/bitshares,bitshares/bitshares-0.x,camponez/bitshares,FollowMyVote/bitshares,camponez/bitshares,jakeporter/Bitshares,jakeporter/Bitshares,bitshares/bitshares,bitshares/bitshares,bitshares/bitshares,jakeporter/Bitshares,camponez/bitshares,frrp/bitshares