Port qt3support module

[Dmitry A. Kuminov]

There are some platform-dependent parts such as in the Q3Process class which need to be ported to OS/2 (in the simplest case taken from the Qt3 port).

However, this functionality is rarely necessary in mature real life applications and therefore has low priority.

[Dmitry A. Kuminov]

To be more exact, qt3support is mostly necessary as a temporary solution when migrating applications from Qt3 to Qt4. Supporting such applications in their transitional states is definitely not our primary task.

[Silvan Scherrer]

i would say this will be done as the really last part.

[Silvan Scherrer]

as time goes on, we should not do that at all. the main reason was because psi did still need Qt3 support. But even psi changed that with 0.15 finally. So i close it.