Qt 5.4 for workspace

[Eike Hein]

Hi,

we're about to branch Plasma for 5.1 this week. Qt 5.4 is
in freeze and is planning a final release on November 18th,
which is six weeks shy of the 5.2 release in January 2015.

Do we want to depend on 5.4 in master after we branch, or
is this too compressed for 5.2?

We also can't depend on 5.4 yet in frameworks, so this
might hold us back regardless in case anything new we want
to use needs changes across the stack.

Thoughts?


Cheers,
Eike