Add license files mandated by (L)GPL and FDL.

Some rarer modules are still missing the required LICENSE files, which
are referred to from the code headers. The same files should
be distributed as part of all the modules, so that the
(L)GPL and FDL licenses are adhered.

These files were wget:d from:

https://qt.gitorious.org/qt/qtbase/blobs/raw/stable/LGPL_EXCEPTION.txt
https://qt.gitorious.org/qt/qtbase/blobs/raw/stable/LICENSE.LGPL
https://qt.gitorious.org/qt/qtbase/blobs/raw/stable/LICENSE.GPL
https://qt.gitorious.org/qt/qtbase/blobs/raw/stable/LICENSE.FDL

Change-Id: I16eebecb075408803055c2e9a1460c3bb98d63ee
Reviewed-by: Jason McDonald <macadder1@gmail.com>
Reviewed-by: Aaron McCarthy <mccarthy.aaron@gmail.com>