Fix licensing for static libraries

In Qt 4, files that are part of ActiveQt static libraries linked into
the application are licensed as BSD. In Qt 5, additional files were
added to the static libraries that are incorrectly licensed as LGPL.

Unify the licensing of these files as BSD.

Task-number: QTBUG-29918
Change-Id: I26735cf9a6003c4110ceef2a722c43dc13a9f63f
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Merge remote-tracking branch 'origin/release' into stable

Change-Id: I012213390ffe24567cfadeacbbbb8d14074b887c