fixes in openwrt script from the lwds-lite lab as well
as some cosmetic changes and updating other scripts to
use two double quotes instead of two single quotes for
empty zone ids.
[rt29843]
[ISC-Bugs #23045] Typos in client/scripts/openbsd
[ISC-Bugs #23565] In the client scripts add a zone id (interface id) if
the domain search address is link local.
[ISC-Bugs #1277] In some of the client scripts add code to handle the
case of the default router information being changed without the address
being changed.
[ISC-Bugs #19147] Use domain-search instead of domain-name in manual and
example conf file. Thanks to a patch from David Cantrell
at Red Hat.
[ISC-Bugs #19761] Restore address when doing a rebind in DHCPv6
[ISC-Bugs #19945] Properly close the quote on some arguments.
[ISC-Bugs #20952] Add 64 bit types to configure.ac
[ISC-Bugs #21308] Add "PATH=" to CLIENT_PATH envrionment variable
- Add -x option, which causes running dhclient processes to exist
gracefully *without* releasing leases [rt16741]
(Merging both at once because the first one depended on the second one)
