Creating this ticket for cherry-picking various fixes into the maint/62 branch.
https://github.com/unicode-org/icu/tree/maint/maint-62
As per the discussion in the TC call on 2018-07-26, we are not going to bump up the version number, but will simply cherry-pick fixes into the maint branch so that users can download the source code with all the various fixes applied.
We likely also want to cherry-pick over the Travis build-bot support so that we can have CI builds on the maint branch.
Closing since ICU 63.1 is out now.