rc.inet1:
* VLAN support added to rc.inet1{,.conf}.
* Created new info_log function to replace $LOGGING variable.
* When logging to syslog, use a tag of 'rc.inet1' with PID.
* Decrease script noisyness at non-debug levels.
* Add more debugging logging for testing.
* Use -4 when configuring IPv4 loopback address.
* Configure ::1 for IPv6 loopbacking.
* Use 'local' not 'declare' in functions.
* Move where DAD is disabled when setting IPv6 addresses.
* Add error checking to some calls to 'ip'.
* Walk backwards through interfaces when deconfiguring.
rc.wireless:
* Log to syslog, failling back to stdout.
* Output error to stderr if not called from rc.inet1.
Manpages and netconfig:
* Updated for new VLAN support.

Signed-off-by: Jakub Jankowski <shasta@toxcorp.com>

Signed-off-by: Jakub Jankowski <shasta@toxcorp.com>

Instead of heavy subshelling, use pkill/pgrep. Also, be a bit more
specific on what we're killing.

Signed-off-by: Jakub Jankowski <shasta@toxcorp.com>

Conditional expression like  [ test1 -a test2 ] should be avoided as it
is not well defined.
See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/test.html#tag_20_128_16
and https://github.com/koalaman/shellcheck/wiki/SC2166

Signed-off-by: Jakub Jankowski <shasta@toxcorp.com>

Instead of "ip | sed", just read the sysfs file in which hardware
address is readily presented for us.

Signed-off-by: Jakub Jankowski <shasta@toxcorp.com>

There's no need to $(cat .../uevent | grep DEVTYPE) and then compare it
to what we're looking for. grep can do all of it for us ("Useless Use of
Cat").
While at it, if we have three ways of checking whether a device is
wireless, let's order them from least expensive (checking dir is only
one stat()) to most expensive (iwconfig | grep). Proof of correctness:
if "iwconfig | grep" is returning true and the other two methods are
not, we will still reach "iwconfig | grep" in the series of if/elif.

Signed-off-by: Jakub Jankowski <shasta@toxcorp.com>