os/impl/LogForwarder: Do not use a static Bottle

[drdanz]

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When the forward method is called twice, the Bottle::clear() method could be called before the message is sent, hence deleting the bottle being sent.

This fixes the LogForwarder skipping messages when messages are sent too quickly (Fixes #2643).

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Libraries

os

• The LogForwarder no longer skips messages when messages are sent too quickly (#2643).

[drdanz]

/rebase

[drdanz]

This PR is temporarily blocked, since this will block the sender when there are 2 messages in queue, and at the moment there is no way to avoid this, or to make the queue bigger.