* Fixed Nano stamina not being halved on respawn
* Reverted the default argument to terminate() change because MSVC is
undable to disambiguate the function pointer passed to sigaction()
* Fatal errors during init (like in TableData) can just call exit(1)
directly anyway (missing "OpenFusion: terminated." be damned)
* Switched to a slightly more portable syntax for getting the version
in the Makefile
* We shouldn't join the shard thread in the signal handler because the
thread the signal handler ends up running in is undefined behaviour and
we don't strictly need to join it anyway
Many of these issues were discovered on OpenBSD.
* Gave it a default argument, since we never actually care about it, but
it needs to have it to conform to the signal handler prototype
* Constricted the area locked by activeCrit to only the block that deals
with the connections vector, to lower the chance of a future badly
placed call to terminate() deadlocking the server instead
This change required sacrificing both code cleanliness and the specific
error reports from perror(). Those could have been kept with a portable
wrapper, but that's too much work. We'll do it if unforseen errors
arise.
