Qt: implemented SM_CXDRAG,SM_CYDRAG.


git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@45072 4005530d-fff6-0310-9dd1-cebe43e6787f
IDE: removed LCLQt from define, resize of components scrollbox is correct now.


git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@45073 4005530d-fff6-0310-9dd1-cebe43e6787f