gcc-4.8: backport fix for ICE when building opus

* backported from 4.8.2, so daisy isn't affected

Signed-off-by: Martin Jansa <martin.jansa@lge.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
qt4: Fix Qt 4.8.5 source to new location

Qt 4.8.5 was moved from http://download.qt-project.org/official_releases/qt/4.8/ to
http://download.qt-project.org/archive/qt/4.8/

Thi fix must be applied for dora and daisy branches.

Signed-off-by: Diego Sueiro <diego.sueiro@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>