[Kst] [Kst-plot/kst] f3eb1e: Fix compilation with strict iterators

[David Faure]

  Branch: refs/heads/master
  Home:   https://github.com/Kst-plot/kst
  Commit: f3eb1eebe59f8b5e33835c190b0ff25638bf579a
      https://github.com/Kst-plot/kst/commit/f3eb1eebe59f8b5e33835c190b0ff25638bf579a
  Author: David Faure <faure at kde.org>
  Date:   2014-01-09 (Thu, 09 Jan 2014)

  Changed paths:
    M src/libkst/datasourcepluginmanager.cpp
    M src/libkst/debug.cpp
    M src/libkstapp/changefiledialog.cpp
    M src/libkstapp/scriptserver.cpp
    M src/libkstmath/basicplugin.cpp
    M src/libkstmath/dataobject.cpp
    M src/libkstmath/equation.cpp
    M src/libkstmath/eventmonitorentry.cpp
    M src/libkstmath/relation.cpp
    M src/widgets/cclineedit.cpp
    M src/widgets/curveselector.cpp
    M src/widgets/matrixselector.cpp
    M src/widgets/scalarselector.cpp
    M src/widgets/stringselector.cpp
    M src/widgets/vectorselector.cpp

  Log Message:
  -----------
  Fix compilation with strict iterators

Setting -DQT_STRICT_ITERATORS allows catching unwanted detaching
when using begin() on Qt container which isn't const.