sendsigs process omission interface
-----------------------------------

Since initscripts package version 2.86.ds1-48, /etc/init.d/sendsigs
is able to omit processes from being killed by killall5(8). Process
id's listed in /var/run/sendsigs.omit, /lib/init/rw/sendsigs.omit or
any file in the /lib/init/rw/sendsigs.omit.d/ directory will be
omitted by sendsigs.

The recommended practise for adding a process id for omission is to
create a file in /lib/init/rw/sendsigs.omit.d/<package name>
containing the process id that is to be omitted by sendsigs.

This feature is only to be used for processes that need to be
running when remote file systems are umounted, and that have
current working directory set to a directory in the root file system.
