TUpDown: clean up, fixed UpdateOrientation filling up

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40187 4005530d-fff6-0310-9dd1-cebe43e6787f
TUpDown: fixed unconnecting associate on free, independent if handle is allocated

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40188 4005530d-fff6-0310-9dd1-cebe43e6787f
TUpDown: nicer UpdateOrientation filling up

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40189 4005530d-fff6-0310-9dd1-cebe43e6787f