Send commit Mesages without increasing pendingCounter - for async plugins

[dgollub]

The commit function needs to operate async for some plugins.

To not exceed pendingLimit the function should not increase the pendingCounter.

The commit function doesn't need a timeout counter.

So the commit message should be send:

• without timeout
• without increasing the pendingCounter
  • (to avoid to exceeding pendingLimit)

Later maybe another pendingList for message without timeouts would be reasonable for performance reasons.

[dgollub]

I could imagine this is obsolete since the only case why this was needed was fixed in: #1161 and/or #1105

Michael please correct me if this is valid for SyncML plugin.