SAMStreamSend: fix tabbing from earlier commit.

     and 'cddd2e9d2cf6f5c50a7d9948fbb2b3247d9768eb'

 - Use lifetime average value for job lag
 - Change the job lag limit to less than 25ms
 - Consider and set the limit of backlogged tunnels to less than 5

Reduce log level for ignored clock adjustment

receiving a message. Possible workaround for tickets #551, #1075, #1411.
Root cause of problem not yet found.
- Increase threshold for loop throttle, this probably isn't the problem.
- Log tweaks

This is caused by an i2pd bug, already fixed.

to reduce chance of running out on high-bandwidth routers

other implementations may not.

to the lease, as that may be reducing the odds of trying a
different path and hurting connection reliability.
While the change may slightly increase connection congestion,
if it helps with reliability then it's worth it.

actually happens before some other thread needs the crypto