These are needed before Qt 5.4.2 goes stable.
Actually no, that's not true because current stable doesn't have qt5 support. Still it would be nice to stabilize these at around the same time as qt5.
Arches, please go ahead.
arm stable
amd64 stable
x86 stable
ppc stable. Closing.
@ppc64 could you please stable too?
Stable for PPC64. Closing.
hppa is needed too for bug #576200
Stable for HPPA. Closing.