LCL: Implement TCustomCheckbox.Alignment (Windows only), partly resolves issue #0012343.


git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46963 4005530d-fff6-0310-9dd1-cebe43e6787f
TRadioGroup: keep Controls[] in sync with Items[] (Issue #0027042)


git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@46964 4005530d-fff6-0310-9dd1-cebe43e6787f