<quote name="Bartosz Dz." date="2014-02-20" time="22:32:42 +0100">
It's worth noting that WMF branches also include temporary hacks to keep current JS/CSS and cached HTML output compatible (for at least 30 days), while release branches never contain them (and thus require HTML caches to be purged during the upgrade process).
Isn't that:
Feel free to base it off of either. There shouldn't be any WMF-specific things in those wmfXX branches. If there is, it is a commit called something like "Commit of various WMF live hacks". That one commit can be safely reverted.
eg: https://git.wikimedia.org/commit/mediawiki%2Fcore.git/a868d086b68f05e7f93727...
Greg