The generation relied on the uitools module for the version, so
if it was not available, we got errors like this:

 WARNING: Cannot open substitute for output '/cmake/Qt5LinguistTools/Qt5LinguistToolsConfig.cmake'
 WARNING: Cannot open substitute for output '/cmake/Qt5LinguistTools/Qt5LinguistToolsConfigVersion.cmake'
 WARNING: Cannot open substitute for output '/cmake/Qt5LinguistTools/Qt5LinguistToolsMacros.cmake'

 http://testresults.qt-project.org/ci/QtTools_stable_Integration/build_00128/linux-g++_no-widgets_Ubuntu_12.04_x64/log.txt.gz



Use MODULE_VERSION for the version instead and MODULE_BASE_OUTDIR for the
generation location.

Change-Id: I9daa6878553015e841b6e41fd1f64eb60ada7774
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>