- Increase the maximum logging line for print done through
log_output_memory().
The reason is that we hit this line length when printing some machine
generated configuration (XML) through the M-plane. Increase to make
more of it visible.
- To limit the impact, only increase this locally in function
log_output_memory(), and statically assert that it will never be
larger than 64 kB.
In other places, we use the old limit.
- Move the definition MAX_LOG_TOTAL to log.c, because it's only used
there.