[Development] QtBase WIP branch request

[Tim Blechmann]

>> We’re working on an update to the macOS/Cocoa platform plugin,
>> and I would like to request a WIP branch where the changes can
>> be finalized:
>>
>>    wip/remac
>>
> you have Good Reasons (TM) for creating a branch according to
> https://wiki.qt.io/Branch_Guidelines#Creating_a_new_feature_branch , yes?

i'm experiencing many of the issues that this branch will address (and
hacked around them in my own version of the cocoa platform plugin).
having a branch which is easy to access would allow me test the changes
in a real-world context.

tia!
tim

> mergable or throw-away?