Merge of existing and default specs when instantiating exchange
BitstampPusherService: remove ReconnectService

ReconnectService was instantiated but never used. On my platform it caused the application to hang on exit. I suspect the Timer or TimerTask within that class is the culprit.
Commenting the instantiation solved the hang issue on my end, with no loss of feature.
Handle both cases where exch. specific params are set
Merge pull request #679 from sutra/develop

Add subscribing account balance changes support for BTCChina streaming service.
Merge pull request #677 from jheusser/customspec

Merge of existing and default specs when instantiating exchange
Fix OkCoin International changes to China version
Merge pull request #678 from stephane-coulomb/patch-2

BitstampPusherService: remove ReconnectService
Merge pull request #682 from jheusser/okcoin_intl

OkCoin International / China switch fixes
Fix test case BTCChinaJSONObjectAdaptersTest failure in non-UTF-8 environment.