Update Gluon packages
ar71xx: disable building u-boot for ZyXEL devices

The u-boot package has some issues causing its build to fail under certain
circumstances. As we don't support the ZyXEL devices it's used for anyways, just
don't build it anymore.
docs: autoupdater: fix example build script
Update netifd and odhcp6c from Barrier Breaker
Update netifd from Barrier Breaker
Reduce fw3 log spam in netifd scripts
Update Gluon packages
Link to hackint.org added
Merge pull request #146 from DerDerwish/master

Link to hackint.org added
allow GLUON_SITEDIR to be set by environement
docs: fix builds.rst
scripts: fix GLUON_SITE_CONFIG

check_site.sh and site.sh were setting GLUON_SITE_CONFIG on their own
even though the environment variable was already exported.
Update netifd from Barrier Breaker (r41888)
Documentation cleanup
docs: clean up index page, add list of supported devices
docs: add 2014.3 release notes
docs: formatting fixes
docs: release 2014.3 corrections/clarifications
docs: releases/v2014.3: another typo fix
Merged upstream changes