- Use real SWT version on ia64, ppc64, s390 and s390x.
    - Remove the swt native libs from the rcp sub-package because they are
        already in the libswt-gtk2 sub-package and rcp requires libswt-gtk2.
    - Set correct eclipse.product in post and postun of sdk and platform
        sub-packages (rh bug # 207442)
    - Don't set the .eclipseproduct twice.