In order to daemonize the SQLServer process for Ladybird, we double-fork
and exit the first child process to ensure the grandchild process is in
a detached state to become SQLServer. After commit c05fcd5, this happens
after Ladybird's QApplication is created. QApplication seems to hook up
some `exit` handling that makes the call to `exit(0)` here not actually
exit the child process.
Instead, using `kill` with SIGTERM will actually terminate the child
process.
78def34c5e