In this SIP version, additional classes used when converting
to a subclass don't get #included automatically so let's
#include them globally with %ModuleHeaderCode
git-svn-id: http://svn.osgeo.org/qgis/trunk@7129 c8812cc2-4d05-0410-92ff-de0c093fc19c
however in Python the destruction had to be done explicitly to acheive right order.
New solution is that QgsMapTool is derived from QObject and on construction, QgsMapCanvas
is set as its parent. This way canvas is always deleted after deletion of map tools.
Also, because of this, I've divided QgsMeasure to QgsMeasureTool and QgsMeasureDialog
(problem with 2 parents with QObject as a base).
git-svn-id: http://svn.osgeo.org/qgis/trunk@6908 c8812cc2-4d05-0410-92ff-de0c093fc19c