Make the generated setup exe automatically contain the version number…

… e.g. qgis_setup0.8.1.exe

git-svn-id: http://svn.osgeo.org/qgis/branches/Release-0_8_0@6669 c8812cc2-4d05-0410-92ff-de0c093fc19c

win_build/qgis.nsi

@@ -83,7 +83,7 @@ FunctionEnd
 ; MUI end ------
 
 Name "${PRODUCT_NAME} ${PRODUCT_VERSION}"
-OutFile "qgis_setup.exe"
+OutFile "qgis_setup${PRODUCT_VERSION_NUMBER}.exe"
 InstallDir "$PROGRAMFILES\Quantum GIS"
 InstallDirRegKey HKLM "${PRODUCT_DIR_REGKEY}" ""
 ShowInstDetails show