gmw_and failing occasionally in parallel case with party_count>2

[YuwanXiao]

Bug report

under Branch 197_GMW
commit dbd50b9

bug detail:

1. gmw_and fails under parallel tests.
2. but works for parallel with party_count=2

reproduce:

1. can run the demos/GMW_demo test to do a simple check .
   it might be easier to reproduce with input changing to all 1 in demo test line 30.
   inputs[i+1].push(1); //Math.floor((Math.random() * maxValue))

2. update test suite protocol.json with party_count>2 to test.
   need to run several since the bug happens occasionally.

related file:
jiff/lib/client/protocols/gmw_bit/ (IO.js and gmw.js)
and commit merge ot listen into lib

failed try outs:

1. add op_id in IO.js line25 to
   op_id: op_id
   or op_id: op_id+'-'+tag
   do not make difference
   var message_to_send = {tag: 'OT', party_id: to_party, message: msg, op_id : op_id encrypted: true};

2. update function generate_op_id_ot with unique seed in counter file
   do not make difference.

it seems the opId is unique when we resolve msg in ot_receive file.

since the parallel fails on >2. it may be involved with op_id matching in ot send and receive.