[Development] Qt modules missing mandatory LICENSE files

[Timo Jyrinki]

Hi,

I'd like to raise awareness that all modules and tarballs should be
shipping the LICENSE files required by the (L)GPL licenses. Currently
only qtbase is including the files. This is a license terms blocker
for distributing the modules.

I started up with qtchooser [1] (merged) and submitted another one for
qtxmlpatterns [2].

[1] https://codereview.qt-project.org/#change,47111
[2] https://codereview.qt-project.org/#change,47191

If it's ok, I could go on with the other modules as well, or you could
do that globally. But this discussion opener is here in case there is
something to wonder or question, or a need to check with the legal
department.

-Timo