Suggested improvement to connection spawning info

[Chaigneau, Nicolas]

In function fr_connection_spawn (src\main\connection.c), the following INFO message is logged:

INFO("%s: Opening additional connection (%" PRIu64 ")", pool->log_prefix, pool->count);

The value logged is the number of times a new connection has been spawned on that pool.
What could be interesting (at least to me) would be to also show the current number of connections, and the number of busy connections.

So, what do you think of something like :

INFO("%s: Opening additional connection (spawned: %" PRIu64 ", num: %d, active: %d) ", pool->log_prefix, pool->count, pool->num, pool->active);


Regards,
Nicolas.

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