A few structures were slightly rearranged in order to plug some holes
left around the locks. Sizes ranging from 8 to 32 bytes could be saved
depending on the structures. No performance difference was noticed (none
was expected there), though memory usage might be slightly reduced in
some rare cases.
This patch merges build message code between sink and log
and introduce a new API based on struct ist array to
prepare message header with zero copy, targeting the
log forwarding feature.
Log format 'iso' and 'timed' are now avalaible on logs line.
A new log format 'priority' is also added.
There are list definitions everywhere in the code, let's drop the need
for including list-t.h to declare them. The rest of the list manipulation
is huge however and not needed everywhere so using the list walking macros
still requires to include list.h.
This patch fixes all the leftovers from the include cleanup campaign. There
were not that many (~400 entries in ~150 files) but it was definitely worth
doing it as it revealed a few duplicates.
The sink files could be moved with almost no change at since they
didn't rely on anything fancy. ssize_t required sys/types.h and
thread.h was needed for the locks.
