Please give back python-casacore aoflagger, wsclean, purify on i386

[Ole Streicher <ole.streicher@gmx.de>]

Dear WB team,

python-casacore, aoflagger, wsclean and purify did FTBFS on i386 due to
a bug in casacore which is fixed now. I'd like to ask you to give back them:

  gb aoflagger_2.8.0-4 . i386
  gb purify_2.0.0-1 . i386
  gb python-casacore_2.1.2-3 . i386
  gb wsclean_2.0-1 . i386

Thank you very much

Ole