It looks like we've finally moved ahead of the curve with regard to FIXMEs. Today, Sam Reedy (and others) plowed through some of them and brought us up to where we need to be in order to deploy 1.18 in 3 weeks. We still need to keep up the pace, but we're in a better position now.
There is one more area that we need to have work done, though, for 1.18 deployment and that is Bug #29068 ("Bugs to be fixed for 1.18 WMF deployment"): https://bugzilla.wikimedia.org/29068
In order to close this tracking bug we need to fix the following:
https://bugzilla.wikimedia.org/29246 -- API errors occasionally with unknown error 231
https://bugzilla.wikimedia.org/30192 -- Thumbnails of archived images don't get deleted
https://bugzilla.wikimedia.org/30352 -- jQuery.makeCollapsible.js should support 'autocollapse', 'innercollapse' and 'outercollapse' options
https://bugzilla.wikimedia.org/30384 -- extra newlines in nested templates in tables [parser difference between 1.17 and 1.18]
Thanks for any help you can give on these bugs,
Mark.