remove cruft from /run directory

The /run directory is a mount point for a tmpfs and should not contain
any files or directories.  This cleans out the /run/openrc
symlink and any other files which were incorrectly placed in /run.
Thanks to Ian Stakenvicius for pointing out this solution.
sysfs: mount the fusectl file system

Reported-by: vapier@gentoo.org
X-Gentoo-Bug: 453740
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=453740
oldnet: accomodate rkhunter false positive

rkhunter thinks OpenRC is a rootkit because of the hidefirstrout
variable. This has been renamed to hideFirstroute in order to get past
rkhunter.

I realize this is not an openrc bug. In this case though I do not have a
problem renaming the variable.

Reported-by: ago@gentoo.org
X-Gentoo-Bug: 339714
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=339714
oldnet: add support for shutdown_network from newnet

This setting, already in use in newnet, allows the user to control
whether network interfaces are stopped when the system shuts down. By
default, under newnet, they are not, so I am making oldnet have the same
default.

A side-affect of this is that in the default configuration this fixes
bugs like the one below.

Reported-by: jerryfleming2006@gmail.com
X-Gentoo-Bug: 259183
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=259183
Rename shutdown_network setting to keep_network

We were telling users that setting shutdown_network=YES would shut down
the network interfaces during shutdown, but this was exactly the
opposite of what we were doing. The default was YES, which was keeping
the interfaces active.

This keeps the default behavior, but renames the setting to keep_network
which more accurately describes its function, and instructs users to set
it to NO if they want the network interfaces to go down.