[QGIS Commit] [qgis/QGIS] caf33b: Fix #8174 (overlaps when using 'avoid intersection...

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/qgis/QGIS
  Commit: caf33b657f6c845779797c86e82fb5d71a28b6ee
      https://github.com/qgis/QGIS/commit/caf33b657f6c845779797c86e82fb5d71a28b6ee
  Author: Martin Dobias <wonder.sk at gmail.com>
  Date:   2014-02-06 (Thu, 06 Feb 2014)

  Changed paths:
    M python/core/qgsvectorlayer.sip
    M src/core/qgsgeometry.cpp
    M src/core/qgsvectorlayer.h
    M tests/src/python/CMakeLists.txt
    A tests/src/python/test_qgsgeometry_avoid_intersections.py

  Log Message:
  -----------
  Fix #8174 (overlaps when using 'avoid intersections' functionality) + test

I am not entirely confident if it will work perfectly with older versions of GEOS (< 3.3)
because of the lack of unary union (that is emulated by series of unions of two geometries)